TY  - JOUR
AU  - Pondělíček, Bedřich
TI  - Subalgebra modular, distributive and boolean varieties of semigroups
JO  - Czechoslovak Mathematical Journal
PY  - 1992
SP  - 757
EP  - 764
VL  - 42
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128374/
DO  - 10.21136/CMJ.1992.128374
LA  - en
ID  - 10_21136_CMJ_1992_128374
ER  -