Existence varieties with lattices of regular subsemigroups K. G. Johnston OriginalPaper Pages: 463 - 468
Relation algebras as residuated Boolean algebras Bjarni JónssonConstantine Tsinakis OriginalPaper Pages: 469 - 478
An approach to tame congruence theory via subtraces Joel BermanSteven Seif OriginalPaper Pages: 479 - 520
Model theoretic properties in the variety generated by a primal algebra G. C. Nelson OriginalPaper Pages: 526 - 537