TY  - JOUR
AU  - A. Nagy
TI  - Permutation functions and (n,m)-commutativity of semigroups .
JO  - Semigroup forum
PY  - 1994
SP  - 71
EP  - 78
VL  - 48
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1994__48_3_135298/
ID  - SF_1994__48_3_135298
ER  -