TY  - JOUR
A1  - Denecke, Klaus-Dieter
T1  - Solid polynomial varieties of semigroups which are definable by identities
Y1  - 2000
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/19363
SN  - 3-85366-951-4
ER  -