@article{GDZPPN002033062,
title = {Subplane replacement in projective planes.},
journal = {Aequationes mathematicae},
volume = {22},
year = {1981},
pages = {134-139},
zbl = {0481.51009},
url = {http://dml.mathdoc.fr/item/GDZPPN002033062}
}
Vedder, Klaus; Swart, Henda. Subplane replacement in projective planes.. Aequationes mathematicae, Tome 22 (1981) pp. 134-139. http://gdmltest.u-ga.fr/item/GDZPPN002033062/