@article{1177706090,
author = {Ogawa, Junjiro},
title = {A Necessary Condition for Existence of Regular and Symmetrical Experimental Designs of Triangular Type, with Partially Balanced Incomplete Blocks},
journal = {Ann. Math. Statist.},
volume = {30},
number = {4},
year = {1959},
pages = { 1063-1071},
language = {en},
url = {http://dml.mathdoc.fr/item/1177706090}
}
Ogawa, Junjiro. A Necessary Condition for Existence of Regular and Symmetrical Experimental Designs of Triangular Type, with Partially Balanced Incomplete Blocks. Ann. Math. Statist., Tome 30 (1959) no. 4, pp. 1063-1071. http://gdmltest.u-ga.fr/item/1177706090/