Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1980_19_6_a6, author = {E. A. Palyutin}, title = {A description of categorical positive {Horn} classes}, journal = {Algebra i logika}, pages = {683--700}, publisher = {mathdoc}, volume = {19}, number = {6}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1980_19_6_a6/} }
E. A. Palyutin. A description of categorical positive Horn classes. Algebra i logika, Tome 19 (1980) no. 6, pp. 683-700. http://geodesic.mathdoc.fr/item/AL_1980_19_6_a6/