TY  - JOUR
AU  - Joel Berman
TI  - Distributive lattices with an additional unary operation. (Short Communication).
JO  - Aequationes mathematicae
PY  - 1977
SP  - 118
EP  - 118
VL  - 15
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1977__15_136641/
ID  - AM2_1977__15_136641
ER  -