Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1968_1_a8, author = {G. I. Zhitomirskii}, title = {Regular and stable relations on generalized heaps}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {64--77}, publisher = {mathdoc}, number = {1}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1968_1_a8/} }
G. I. Zhitomirskii. Regular and stable relations on generalized heaps. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1968), pp. 64-77. http://geodesic.mathdoc.fr/item/IVM_1968_1_a8/