TY  - JOUR
AU  - K.H. Hofmann
AU  - W.A.F. Ruppert
TI  - Foliations induced by congruences.
JO  - Semigroup forum
PY  - 1989
SP  - 365
EP  - 370
VL  - 38
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1989__38_2_134967/
ID  - SF_1989__38_2_134967
ER  -