@article{1183507693,
author = {Baer, Reinhold},
title = {Polarities in finite projective planes},
journal = {Bull. Amer. Math. Soc.},
volume = {52},
number = {12},
year = {1946},
pages = { 77-93},
language = {en},
url = {http://dml.mathdoc.fr/item/1183507693}
}
Baer, Reinhold. Polarities in finite projective planes. Bull. Amer. Math. Soc., Tome 52 (1946) no. 12, pp. 77-93. http://gdmltest.u-ga.fr/item/1183507693/