TY  - BOOK
AU  - Shum
ED  - International Conference in Semigroups and Its Related Topics
TI  - Semigroups
SN  - 981-3083-86-7
PY  - 1998///
CY  - Singapore [etc.]
PB  - Springer-Verlag
KW  - Semigrupos
KW  - QA182
ER  -