Varieties of semigroups with non-trivial identities on subsemigroup lattices V. B. Repnitskii Pages: 69 - 73
$ {\cal L} $-subvarieties of the variety of idempotent semirings Zhao XianzhongK. P. ShumY. Q. Guo Pages: 75 - 96
Decidability of finite quasivarieties generated by certain transformation semigroups M. V. Volkov Pages: 97 - 103
Each complexity-two word represents every sufficiently long spike Nereu E. BurinJohn R. IsbellD. M. Silberger Pages: 243 - 251
Natural dualities for quasivarieties generated by a finite commutative ring David M. ClarkPawel M. IdziakRoss Willard Pages: 285 - 320
Notes on sums of algebras, subdirect products and subdirectly irreducible algebras Anna Romanowska Pages: 321 - 341
