@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/