Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1972__13_3_a9, author = {Lis\'a, Jarmila}, title = {Frattinian constructions}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {511--533}, publisher = {mathdoc}, volume = {13}, number = {3}, year = {1972}, mrnumber = {0316328}, zbl = {0251.06008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1972__13_3_a9/} }
Lisá, Jarmila. Frattinian constructions. Commentationes Mathematicae Universitatis Carolinae, Tome 13 (1972) no. 3, pp. 511-533. http://geodesic.mathdoc.fr/item/CMUC_1972__13_3_a9/