Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1967_8_a11, author = {O. V. Shimel'fenig}, title = {The theory of crossed semi-heaps}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {100--105}, publisher = {mathdoc}, number = {8}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1967_8_a11/} }
O. V. Shimel'fenig. The theory of crossed semi-heaps. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1967), pp. 100-105. http://geodesic.mathdoc.fr/item/IVM_1967_8_a11/