Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1971_11_a3, author = {A. M. Vainberg}, title = {The hyperarea of the level surfaces of functions of several variables}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {25--27}, publisher = {mathdoc}, number = {11}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_11_a3/} }
A. M. Vainberg. The hyperarea of the level surfaces of functions of several variables. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1971), pp. 25-27. http://geodesic.mathdoc.fr/item/IVM_1971_11_a3/