TY  - JOUR
AU  - P.E.T. Jorgensen
AU  - X.C. Quan
TI  - Positivity and cohomology for involutive semigroups.
JO  - Semigroup forum
PY  - 1993
SP  - 60
EP  - 80
VL  - 47
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1993__47_2_135254/
ID  - SF_1993__47_2_135254
ER  -