TY  - BOOK
TI  - Symmetric inverse semigroups 
SN  - 0821806270 | 9781470412777 (online)
PY  - 1996///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/surv/046 | http://dx.doi.org/10.1090/surv/046
ER  -