TY  - JOUR
AU  - E. D. Schwab
TI  - Inverse semigroups generated by group congruences. The M\"{o}bius functions
JO  - Algebra and discrete mathematics
PY  - 2013
SP  - 116
EP  - 126
VL  - 16
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2013_16_1_a12/
LA  - en
ID  - ADM_2013_16_1_a12
ER  -