Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1982__24_134545, author = {M. Yamada}, title = {P-systems in regular semigroups.}, journal = {Semigroup forum}, pages = {173--188}, publisher = {mathdoc}, volume = {24}, year = {1982}, zbl = {0479.20030}, url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134545/} }
M. Yamada. P-systems in regular semigroups.. Semigroup forum, Tome 24 (1982), pp. 173-188. http://geodesic.mathdoc.fr/item/SF_1982__24_134545/