@article{1177704858,
author = {Freeman, G. H.},
title = {Some Further Designs of Type O:PP},
journal = {Ann. Math. Statist.},
volume = {32},
number = {4},
year = {1961},
pages = { 1186-1190},
language = {en},
url = {http://dml.mathdoc.fr/item/1177704858}
}
Freeman, G. H. Some Further Designs of Type O:PP. Ann. Math. Statist., Tome 32 (1961) no. 4, pp. 1186-1190. http://gdmltest.u-ga.fr/item/1177704858/