@article{1177692736,
author = {Aggarwal, K. R.},
title = {A Note on Construction of Triangular P.B.I.B. Design with Parameters $v = 21, b = 35, r = 10, k = 6, \lambda\_1 = 2$ and $\lambda\_2 = 3$},
journal = {Ann. Math. Statist.},
volume = {43},
number = {6},
year = {1972},
language = {en},
url = {http://dml.mathdoc.fr/item/1177692736}
}
Aggarwal, K. R. A Note on Construction of Triangular P.B.I.B. Design with Parameters $v = 21, b = 35, r = 10, k = 6, \lambda_1 = 2$ and $\lambda_2 = 3$. Ann. Math. Statist., Tome 43 (1972) no. 6, . http://gdmltest.u-ga.fr/item/1177692736/