@article{1177699284, author = {Kapadia, C. H.}, title = {On the Block Structure of Singular Group Divisible Designs}, journal = {Ann. Math. Statist.}, volume = {37}, number = {6}, year = {1966}, pages = { 1398-1400}, language = {en}, url = {http://dml.mathdoc.fr/item/1177699284} }
Kapadia, C. H. On the Block Structure of Singular Group Divisible Designs. Ann. Math. Statist., Tome 37 (1966) no. 6, pp. 1398-1400. http://gdmltest.u-ga.fr/item/1177699284/