@article{GDZPPN002035650,
title = {Elliptic semiplanes and group divisible designs with orthogonal resolutions.},
journal = {Aequationes mathematicae},
volume = {30},
year = {1986},
pages = {80-92},
zbl = {0586.05006},
url = {http://dml.mathdoc.fr/item/GDZPPN002035650}
}
Vanstone, S.A.; Lamken, E.R. Elliptic semiplanes and group divisible designs with orthogonal resolutions.. Aequationes mathematicae, Tome 30 (1986) pp. 80-92. http://gdmltest.u-ga.fr/item/GDZPPN002035650/