@article{1177706383, author = {Sprott, D. A.}, title = {A Series of Symmetrical Group Divisible Incomplete Block Designs}, journal = {Ann. Math. Statist.}, volume = {30}, number = {4}, year = {1959}, pages = { 249-251}, language = {en}, url = {http://dml.mathdoc.fr/item/1177706383} }
Sprott, D. A. A Series of Symmetrical Group Divisible Incomplete Block Designs. Ann. Math. Statist., Tome 30 (1959) no. 4, pp. 249-251. http://gdmltest.u-ga.fr/item/1177706383/