Schreier-Zassenhaus theorem for algebras. I
Schreier-Zassenhaus theorem for algebras. II
Schützenberger groups of ...-classes in the semigroup of all binary relations on a set.
Schwache Teilbarkeitshalbgruppen.
Semigroup representations of medial groupoids
Simplicity of algebras requires to investigate almost all operations
Simultaneous nondeterministic games. I
Simultaneous nondeterministic games. II
Simultaneous nondeterministic games. III
Some Maximal Closed Classes of Operations on Infinite Sets.
Some old and new problems in the independence theory
Special types of universal algebras preserving a relation
Subalgebra lattices of unary algebras and an axiom of choice
Subcoherent algebras
Subdirect representations in axiomatic classes
Subdirectly irreducible algebras of quasiordered logics
Systems of equations and tolerance relations