TY  - JOUR
AU  - Auinger, Karl
TI  - Bifree objects in e-varieties of strict orthodox semigroups and the lattice of strict orthodox *-semigroup varieties
JO  - Glasgow mathematical journal
PY  - 1993
SP  - 25
EP  - 37
VL  - 35
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009538/
DO  - 10.1017/S0017089500009538
ID  - 10_1017_S0017089500009538
ER  -