Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1993__47_2_135254, author = {P.E.T. Jorgensen and X.C. Quan}, title = {Positivity and cohomology for involutive semigroups.}, journal = {Semigroup forum}, pages = {60--80}, publisher = {mathdoc}, volume = {47}, number = {2}, year = {1993}, zbl = {0818.46067}, url = {http://geodesic.mathdoc.fr/item/SF_1993__47_2_135254/} }
P.E.T. Jorgensen; X.C. Quan. Positivity and cohomology for involutive semigroups.. Semigroup forum, Tome 47 (1993) no. 2, pp. 60-80. http://geodesic.mathdoc.fr/item/SF_1993__47_2_135254/