@article{GDZPPN002024314,
title = {Non-Injective Collineations on Some Sets in Desarguesian Projective Planes and Extension of Non-Commutative Valuations.},
journal = {Aequationes mathematicae},
volume = {5},
year = {1970},
pages = {307-321},
zbl = {0202.51101},
url = {http://dml.mathdoc.fr/item/GDZPPN002024314}
}
Radó, F. Non-Injective Collineations on Some Sets in Desarguesian Projective Planes and Extension of Non-Commutative Valuations.. Aequationes mathematicae, Tome 5 (1970) pp. 307-321. http://gdmltest.u-ga.fr/item/GDZPPN002024314/