@article{1200771826, author = {Enomoto, Hikoe and Ito, Noboru and Noda, Ryuzaburo}, title = {Tight 4-designs}, journal = {Osaka J. Math.}, volume = {16}, number = {1}, year = {1979}, pages = { 39-43}, language = {en}, url = {http://dml.mathdoc.fr/item/1200771826} }
Enomoto, Hikoe; Ito, Noboru; Noda, Ryuzaburo. Tight 4-designs. Osaka J. Math., Tome 16 (1979) no. 1, pp. 39-43. http://gdmltest.u-ga.fr/item/1200771826/