@article{DAN_1997_354_1_a1,
     author = {N. A. Bobylev and I. G. Ismailov and S. K. Korovin},
     title = {Gradient procedures in problems with nonisolated extremals},
     journal = {Doklady Akademii Nauk},
     pages = {11--13},
     publisher = {mathdoc},
     volume = {354},
     number = {1},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_354_1_a1/}
}