@article{01644412, title = {SPG systems and semipartial geometries.}, journal = {Advances in Geometry}, volume = {1}, year = {2001}, pages = {229-244}, doi = {10.1515/advg.2001.015}, zbl = {0985.51006}, language = {en}, url = {http://dml.mathdoc.fr/item/01644412} }
Thas, J.A. SPG systems and semipartial geometries.. Advances in Geometry, Tome 1 (2001) pp. 229-244. doi : 10.1515/advg.2001.015. http://gdmltest.u-ga.fr/item/01644412/