TY  - BOOK
AU  - Nagy Attila
TI  - Special classes of semigroups
SN  - 0-7923-6890-8
U1  - 512.2 
PY  - 2001///
CY  - Dordrecht
PB  - Kluwer Academic
KW  - Group theory
KW  - Semigroups
ER  -