The Embedding of Some Lattices into Lattices of All Subgroups of Free Groups
Характеризация операний в алгебрах при помощи частично упорядоченных множеств
Chains of Decompositions and -Ary Relations
Uniqueness of improper operations
Free algebras on a fixed set
Structure of free algebras
On a variety of infinite algebras
A note on categories of partial algebras
Meet-preserving free functors
Admissible operations in categories of algebras
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