diff --git a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MST.kt b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MST.kt
index 0e8151c04..22b2efcda 100644
--- a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MST.kt
+++ b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MST.kt
@@ -6,6 +6,8 @@ import scientifik.kmath.operations.RealField
 
 /**
  * A Mathematical Syntax Tree node for mathematical expressions.
+ *
+ * @author Alexander Nozik
  */
 sealed class MST {
     /**
@@ -52,6 +54,7 @@ sealed class MST {
  * @receiver the algebra that provides operations.
  * @param node the node to evaluate.
  * @return the value of expression.
+ * @author Alexander Nozik
  */
 fun <T> Algebra<T>.evaluate(node: MST): T = when (node) {
     is MST.Numeric -> (this as? NumericAlgebra<T>)?.number(node.value)
diff --git a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstAlgebra.kt b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstAlgebra.kt
index 23deae24b..ac8765198 100644
--- a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstAlgebra.kt
+++ b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstAlgebra.kt
@@ -4,6 +4,8 @@ import scientifik.kmath.operations.*
 
 /**
  * [Algebra] over [MST] nodes.
+ *
+ * @author Alexander Nozik
  */
 object MstAlgebra : NumericAlgebra<MST> {
     override fun number(value: Number): MST = MST.Numeric(value)
@@ -19,6 +21,8 @@ object MstAlgebra : NumericAlgebra<MST> {
 
 /**
  * [Space] over [MST] nodes.
+ *
+ * @author Alexander Nozik
  */
 object MstSpace : Space<MST>, NumericAlgebra<MST> {
     override val zero: MST = number(0.0)
@@ -36,6 +40,8 @@ object MstSpace : Space<MST>, NumericAlgebra<MST> {
 
 /**
  * [Ring] over [MST] nodes.
+ *
+ * @author Alexander Nozik
  */
 object MstRing : Ring<MST>, NumericAlgebra<MST> {
     override val zero: MST = number(0.0)
@@ -57,6 +63,8 @@ object MstRing : Ring<MST>, NumericAlgebra<MST> {
 
 /**
  * [Field] over [MST] nodes.
+ *
+ * @author Alexander Nozik
  */
 object MstField : Field<MST> {
     override val zero: MST = number(0.0)
@@ -77,6 +85,8 @@ object MstField : Field<MST> {
 
 /**
  * [ExtendedField] over [MST] nodes.
+ *
+ * @author Iaroslav Postovalov
  */
 object MstExtendedField : ExtendedField<MST> {
     override val zero: MST = number(0.0)
diff --git a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstExpression.kt b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstExpression.kt
index 293152cdd..71779ac96 100644
--- a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstExpression.kt
+++ b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MstExpression.kt
@@ -11,6 +11,7 @@ import kotlin.contracts.contract
  *
  * @property algebra the algebra that provides operations.
  * @property mst the [MST] node.
+ * @author Alexander Nozik
  */
 class MstExpression<T>(val algebra: Algebra<T>, val mst: MST) : Expression<T> {
     private inner class InnerAlgebra(val arguments: Map<String, T>) : NumericAlgebra<T> {
@@ -31,6 +32,8 @@ class MstExpression<T>(val algebra: Algebra<T>, val mst: MST) : Expression<T> {
 
 /**
  * Builds [MstExpression] over [Algebra].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any, A : Algebra<T>, E : Algebra<MST>> A.mst(
     mstAlgebra: E,
@@ -39,6 +42,8 @@ inline fun <reified T : Any, A : Algebra<T>, E : Algebra<MST>> A.mst(
 
 /**
  * Builds [MstExpression] over [Space].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any> Space<T>.mstInSpace(block: MstSpace.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -47,6 +52,8 @@ inline fun <reified T : Any> Space<T>.mstInSpace(block: MstSpace.() -> MST): Mst
 
 /**
  * Builds [MstExpression] over [Ring].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any> Ring<T>.mstInRing(block: MstRing.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -55,6 +62,8 @@ inline fun <reified T : Any> Ring<T>.mstInRing(block: MstRing.() -> MST): MstExp
 
 /**
  * Builds [MstExpression] over [Field].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any> Field<T>.mstInField(block: MstField.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -63,6 +72,8 @@ inline fun <reified T : Any> Field<T>.mstInField(block: MstField.() -> MST): Mst
 
 /**
  * Builds [MstExpression] over [ExtendedField].
+ *
+ * @author Iaroslav Postovalov
  */
 inline fun <reified T : Any> Field<T>.mstInExtendedField(block: MstExtendedField.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -71,6 +82,8 @@ inline fun <reified T : Any> Field<T>.mstInExtendedField(block: MstExtendedField
 
 /**
  * Builds [MstExpression] over [FunctionalExpressionSpace].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any, A : Space<T>> FunctionalExpressionSpace<T, A>.mstInSpace(block: MstSpace.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -79,6 +92,8 @@ inline fun <reified T : Any, A : Space<T>> FunctionalExpressionSpace<T, A>.mstIn
 
 /**
  * Builds [MstExpression] over [FunctionalExpressionRing].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any, A : Ring<T>> FunctionalExpressionRing<T, A>.mstInRing(block: MstRing.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -87,6 +102,8 @@ inline fun <reified T : Any, A : Ring<T>> FunctionalExpressionRing<T, A>.mstInRi
 
 /**
  * Builds [MstExpression] over [FunctionalExpressionField].
+ *
+ * @author Alexander Nozik
  */
 inline fun <reified T : Any, A : Field<T>> FunctionalExpressionField<T, A>.mstInField(block: MstField.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -95,6 +112,8 @@ inline fun <reified T : Any, A : Field<T>> FunctionalExpressionField<T, A>.mstIn
 
 /**
  * Builds [MstExpression] over [FunctionalExpressionExtendedField].
+ *
+ * @author Iaroslav Postovalov
  */
 inline fun <reified T : Any, A : ExtendedField<T>> FunctionalExpressionExtendedField<T, A>.mstInExtendedField(block: MstExtendedField.() -> MST): MstExpression<T> {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
diff --git a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/parser.kt b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/parser.kt
index cba335a8d..d83b12486 100644
--- a/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/parser.kt
+++ b/kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/parser.kt
@@ -17,6 +17,8 @@ import scientifik.kmath.operations.SpaceOperations
 
 /**
  * TODO move to core
+ *
+ * @author Alexander Nozik and Iaroslav Postovalov
  */
 object ArithmeticsEvaluator : Grammar<MST>() {
     // TODO replace with "...".toRegex() when better-parse 0.4.1 is released
@@ -85,6 +87,7 @@ object ArithmeticsEvaluator : Grammar<MST>() {
  *
  * @receiver the string to parse.
  * @return the [MST] node.
+ * @author Alexander Nozik
  */
 fun String.tryParseMath(): ParseResult<MST> = ArithmeticsEvaluator.tryParseToEnd(this)
 
@@ -93,5 +96,6 @@ fun String.tryParseMath(): ParseResult<MST> = ArithmeticsEvaluator.tryParseToEnd
  *
  * @receiver the string to parse.
  * @return the [MST] node.
+ * @author Alexander Nozik
  */
 fun String.parseMath(): MST = ArithmeticsEvaluator.parseToEnd(this)
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/asm.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/asm.kt
index ee0ea15ff..a5da51564 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/asm.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/asm.kt
@@ -11,7 +11,12 @@ import scientifik.kmath.operations.Algebra
 import kotlin.reflect.KClass
 
 /**
- * Compile given MST to an Expression using AST compiler
+ * Compiles given MST to an Expression using AST compiler.
+ *
+ * @param type the target type.
+ * @param algebra the target algebra.
+ * @return the compiled expression.
+ * @author Alexander Nozik
  */
 fun <T : Any> MST.compileWith(type: KClass<T>, algebra: Algebra<T>): Expression<T> {
     fun AsmBuilder<T>.visit(node: MST) {
@@ -54,11 +59,15 @@ fun <T : Any> MST.compileWith(type: KClass<T>, algebra: Algebra<T>): Expression<
 }
 
 /**
- * Compile an [MST] to ASM using given algebra
+ * Compiles an [MST] to ASM using given algebra.
+ *
+ * @author Alexander Nozik.
  */
 inline fun <reified T : Any> Algebra<T>.expression(mst: MST): Expression<T> = mst.compileWith(T::class, this)
 
 /**
- * Optimize performance of an [MstExpression] using ASM codegen
+ * Optimizes performance of an [MstExpression] using ASM codegen.
+ *
+ * @author Alexander Nozik.
  */
 inline fun <reified T : Any> MstExpression<T>.compile(): Expression<T> = mst.compileWith(T::class, algebra)
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/AsmBuilder.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/AsmBuilder.kt
index f8c159baf..1cf49a251 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/AsmBuilder.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/AsmBuilder.kt
@@ -20,6 +20,7 @@ import kotlin.reflect.KClass
  * @property algebra the algebra the applied AsmExpressions use.
  * @property className the unique class name of new loaded class.
  * @property invokeLabel0Visitor the function to apply to this object when generating invoke method, label 0.
+ * @author Iaroslav Postovalov
  */
 internal class AsmBuilder<T> internal constructor(
     private val classOfT: KClass<*>,
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MstType.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MstType.kt
index bf73d304b..81e6791c1 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MstType.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MstType.kt
@@ -2,6 +2,9 @@ package scientifik.kmath.asm.internal
 
 import scientifik.kmath.ast.MST
 
+/**
+ * Represents types known in [MST], numbers and general values.
+ */
 internal enum class MstType {
     GENERAL,
     NUMBER;
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/codegenUtils.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/codegenUtils.kt
index 021c8ae02..ab29d3614 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/codegenUtils.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/codegenUtils.kt
@@ -6,6 +6,9 @@ import org.objectweb.asm.commons.InstructionAdapter
 import scientifik.kmath.ast.MST
 import scientifik.kmath.expressions.Expression
 import scientifik.kmath.operations.Algebra
+import scientifik.kmath.operations.FieldOperations
+import scientifik.kmath.operations.RingOperations
+import scientifik.kmath.operations.SpaceOperations
 import java.lang.reflect.Method
 import kotlin.contracts.InvocationKind
 import kotlin.contracts.contract
@@ -13,20 +16,27 @@ import kotlin.reflect.KClass
 
 private val methodNameAdapters: Map<Pair<String, Int>, String> by lazy {
     hashMapOf(
-        "+" to 2 to "add",
-        "*" to 2 to "multiply",
-        "/" to 2 to "divide",
-        "+" to 1 to "unaryPlus",
-        "-" to 1 to "unaryMinus",
-        "-" to 2 to "minus"
+        SpaceOperations.PLUS_OPERATION to 2 to "add",
+        RingOperations.TIMES_OPERATION to 2 to "multiply",
+        FieldOperations.DIV_OPERATION to 2 to "divide",
+        SpaceOperations.PLUS_OPERATION to 1 to "unaryPlus",
+        SpaceOperations.MINUS_OPERATION to 1 to "unaryMinus",
+        SpaceOperations.MINUS_OPERATION to 2 to "minus"
     )
 }
 
+/**
+ * Returns ASM [Type] for given [KClass].
+ *
+ * @author Iaroslav Postovalov
+ */
 internal val KClass<*>.asm: Type
     get() = Type.getType(java)
 
 /**
  * Returns singleton array with this value if the [predicate] is true, returns empty array otherwise.
+ *
+ * @author Iaroslav Postovalov
  */
 internal inline fun <reified T> T.wrapToArrayIf(predicate: (T) -> Boolean): Array<T> {
     contract { callsInPlace(predicate, InvocationKind.EXACTLY_ONCE) }
@@ -35,11 +45,15 @@ internal inline fun <reified T> T.wrapToArrayIf(predicate: (T) -> Boolean): Arra
 
 /**
  * Creates an [InstructionAdapter] from this [MethodVisitor].
+ *
+ * @author Iaroslav Postovalov
  */
 private fun MethodVisitor.instructionAdapter(): InstructionAdapter = InstructionAdapter(this)
 
 /**
  * Creates an [InstructionAdapter] from this [MethodVisitor] and applies [block] to it.
+ *
+ * @author Iaroslav Postovalov
  */
 internal inline fun MethodVisitor.instructionAdapter(block: InstructionAdapter.() -> Unit): InstructionAdapter {
     contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
@@ -48,6 +62,8 @@ internal inline fun MethodVisitor.instructionAdapter(block: InstructionAdapter.(
 
 /**
  * Constructs a [Label], then applies it to this visitor.
+ *
+ * @author Iaroslav Postovalov
  */
 internal fun MethodVisitor.label(): Label = Label().also { visitLabel(it) }
 
@@ -56,6 +72,8 @@ internal fun MethodVisitor.label(): Label = Label().also { visitLabel(it) }
  *
  * This methods helps to avoid collisions of class name to prevent loading several classes with the same name. If there
  * is a colliding class, change [collision] parameter or leave it `0` to check existing classes recursively.
+ *
+ * @author Iaroslav Postovalov
  */
 internal tailrec fun buildName(mst: MST, collision: Int = 0): String {
     val name = "scientifik.kmath.asm.generated.AsmCompiledExpression_${mst.hashCode()}_$collision"
@@ -75,6 +93,11 @@ internal inline fun ClassWriter(flags: Int, block: ClassWriter.() -> Unit): Clas
     return ClassWriter(flags).apply(block)
 }
 
+/**
+ * Invokes [visitField] and applies [block] to the [FieldVisitor].
+ *
+ * @author Iaroslav Postovalov
+ */
 internal inline fun ClassWriter.visitField(
     access: Int,
     name: String,
@@ -104,7 +127,7 @@ private fun <T> AsmBuilder<T>.findSpecific(context: Algebra<T>, name: String, pa
  * Checks if the target [context] for code generation contains a method with needed [name] and arity, also builds
  * type expectation stack for needed arity.
  *
- * @return `true` if contains, else `false`.
+ * @author Iaroslav Postovalov
  */
 private fun <T> AsmBuilder<T>.buildExpectationStack(
     context: Algebra<T>,
@@ -136,7 +159,7 @@ private fun <T> AsmBuilder<T>.mapTypes(method: Method, parameterTypes: Array<Mst
  * Checks if the target [context] for code generation contains a method with needed [name] and arity and inserts
  * [AsmBuilder.invokeAlgebraOperation] of this method.
  *
- * @return `true` if contains, else `false`.
+ * @author Iaroslav Postovalov
  */
 private fun <T> AsmBuilder<T>.tryInvokeSpecific(
     context: Algebra<T>,
@@ -160,7 +183,9 @@ private fun <T> AsmBuilder<T>.tryInvokeSpecific(
 }
 
 /**
- * Builds specialized algebra call with option to fallback to generic algebra operation accepting String.
+ * Builds specialized [context] call with option to fallback to generic algebra operation accepting [String].
+ *
+ * @author Iaroslav Postovalov
  */
 internal inline fun <T> AsmBuilder<T>.buildAlgebraOperationCall(
     context: Algebra<T>,
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/mapIntrinsics.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/mapIntrinsics.kt
index 80e83c1bf..997dbbfe5 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/mapIntrinsics.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/mapIntrinsics.kt
@@ -2,6 +2,11 @@
 
 package scientifik.kmath.asm.internal
 
+/**
+ * Gets value with given [key] or throws [IllegalStateException] whenever it is not present.
+ *
+ * @author Iaroslav Postovalov
+ */
 @JvmOverloads
 internal fun <K, V> Map<K, V>.getOrFail(key: K, default: V? = null): V =
     this[key] ?: default ?: error("Parameter not found: $key")
diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt
index 00b16dc98..fabfbdb49 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/AlgebraExtensions.kt
@@ -24,6 +24,7 @@ fun <T> Space<T>.sum(data: Sequence<T>): T = data.fold(zero) { left, right -> ad
  * @receiver the algebra that provides addition and division.
  * @param data the iterable to find average.
  * @return the average value.
+ * @author Iaroslav Postovalov
  */
 fun <T> Space<T>.average(data: Iterable<T>): T = sum(data) / data.count()
 
@@ -33,6 +34,7 @@ fun <T> Space<T>.average(data: Iterable<T>): T = sum(data) / data.count()
  * @receiver the algebra that provides addition and division.
  * @param data the sequence to find average.
  * @return the average value.
+ * @author Iaroslav Postovalov
  */
 fun <T> Space<T>.average(data: Sequence<T>): T = sum(data) / data.count()
 
@@ -60,6 +62,7 @@ fun <T> Sequence<T>.sumWith(space: Space<T>): T = space.sum(this)
  * @receiver the iterable to find average.
  * @param space the algebra that provides addition and division.
  * @return the average value.
+ * @author Iaroslav Postovalov
  */
 fun <T> Iterable<T>.averageWith(space: Space<T>): T = space.average(this)
 
@@ -69,6 +72,7 @@ fun <T> Iterable<T>.averageWith(space: Space<T>): T = space.average(this)
  * @receiver the sequence to find average.
  * @param space the algebra that provides addition and division.
  * @return the average value.
+ * @author Iaroslav Postovalov
  */
 fun <T> Sequence<T>.averageWith(space: Space<T>): T = space.average(this)
 
@@ -98,6 +102,7 @@ fun <T> Ring<T>.power(arg: T, power: Int): T {
  * @param arg the base.
  * @param power the exponent.
  * @return the base raised to the power.
+ * @author Iaroslav Postovalov
  */
 fun <T> Field<T>.power(arg: T, power: Int): T {
     require(power != 0 || arg != zero) { "The $zero raised to $power is not defined." }
diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/FloatBuffer.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/FloatBuffer.kt
index 3beb110cf..d1b99685c 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/FloatBuffer.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/FloatBuffer.kt
@@ -6,6 +6,7 @@ import kotlin.contracts.contract
  * Specialized [MutableBuffer] implementation over [FloatArray].
  *
  * @property array the underlying array.
+ * @author Iaroslav Postovalov
  */
 inline class FloatBuffer(val array: FloatArray) : MutableBuffer<Float> {
     override val size: Int get() = array.size