Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_139_2_a19, author = {L. E. Sternin}, title = {The boundary of the region of existence of optimal nozzles free of shock waves}, journal = {Doklady Akademii Nauk}, pages = {335--336}, publisher = {mathdoc}, volume = {139}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a19/} }
L. E. Sternin. The boundary of the region of existence of optimal nozzles free of shock waves. Doklady Akademii Nauk, Tome 139 (1961) no. 2, pp. 335-336. http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a19/