@article{1177699166,
author = {Seiden, Esther},
title = {A Note on Construction of Partially Balanced Incomplete Block Designs with Parameters $v = 28, n\_1 = 12, n\_2 = 15$ and $p^2\_{11} = 4^1$},
journal = {Ann. Math. Statist.},
volume = {37},
number = {6},
year = {1966},
pages = { 1783-1789},
language = {en},
url = {http://dml.mathdoc.fr/item/1177699166}
}
Seiden, Esther. A Note on Construction of Partially Balanced Incomplete Block Designs with Parameters $v = 28, n_1 = 12, n_2 = 15$ and $p^2_{11} = 4^1$. Ann. Math. Statist., Tome 37 (1966) no. 6, pp. 1783-1789. http://gdmltest.u-ga.fr/item/1177699166/