@article{GDZPPN00239331X,
title = {Elations of finite projective planes.},
journal = {Mathematische Zeitschrift},
volume = {82},
year = {1963},
pages = {247-258},
zbl = {0114.12603},
url = {http://dml.mathdoc.fr/item/GDZPPN00239331X}
}
Piper, F.C. Elations of finite projective planes.. Mathematische Zeitschrift, Tome 82 (1963) pp. 247-258. http://gdmltest.u-ga.fr/item/GDZPPN00239331X/