@article{1028998510, author = {Lyndon, R. C.}, title = {Relation algebras and projective geometries.}, journal = {Michigan Math. J.}, volume = {8}, number = {1}, year = {1961}, pages = { 21-28}, language = {en}, url = {http://dml.mathdoc.fr/item/1028998510} }
Lyndon, R. C. Relation algebras and projective geometries.. Michigan Math. J., Tome 8 (1961) no. 1, pp. 21-28. http://gdmltest.u-ga.fr/item/1028998510/