Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1990_9_a13, author = {L. I. Minchenko}, title = {Derivatives of some multivalued mappings}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {88--89}, publisher = {mathdoc}, number = {9}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1990_9_a13/} }
L. I. Minchenko. Derivatives of some multivalued mappings. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1990), pp. 88-89. http://geodesic.mathdoc.fr/item/IVM_1990_9_a13/