TY  - JOUR
A1  - Denecke, Klaus-Dieter
A1  - Koppitz, Jörg
T1  - Finite monoids of hypersubstitutions of type € = (2)
Y1  - 1998
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/23341
ER  -