Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1983_9_a11, author = {K. Ya. Gibert}, title = {$n$-chain geometries}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {85--87}, publisher = {mathdoc}, number = {9}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1983_9_a11/} }
K. Ya. Gibert. $n$-chain geometries. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1983), pp. 85-87. http://geodesic.mathdoc.fr/item/IVM_1983_9_a11/