@article{GDZPPN002023830,
title = {On Collineations on Three and on Four Lines in a Projective Plane.},
journal = {Aequationes mathematicae},
volume = {5},
year = {1970},
pages = {51-55},
zbl = {0193.21203},
url = {http://dml.mathdoc.fr/item/GDZPPN002023830}
}
Havel, Václav. On Collineations on Three and on Four Lines in a Projective Plane.. Aequationes mathematicae, Tome 5 (1970) pp. 51-55. http://gdmltest.u-ga.fr/item/GDZPPN002023830/