Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AM2_1972__8_136304, author = {N.S. Mendelsohn and D.M. Johnson}, title = {Extended {Triple} {Systems.}}, journal = {Aequationes mathematicae}, pages = {291--298}, publisher = {mathdoc}, volume = {8}, year = {1972}, zbl = {0256.20096}, url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136304/} }
N.S. Mendelsohn; D.M. Johnson. Extended Triple Systems.. Aequationes mathematicae, Tome 8 (1972), pp. 291-298. http://geodesic.mathdoc.fr/item/AM2_1972__8_136304/