TY  - BOOK
TI  - Cogroups and co-rings in categories of associative rings 
SN  - 0821804952 | 9781470412760 (online)
PY  - 1996///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/surv/045 | http://dx.doi.org/10.1090/surv/045
ER  -