TY  - JOUR
AU  - Gardner, Barry J.
TI  - Ring varieties closed under ideal sums
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1977
SP  - 569
EP  - 578
VL  - 18
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1977__18_3_a14/
LA  - en
ID  - CMUC_1977__18_3_a14
ER  -