@article{DE_1998_34_3_a8,
     author = {N. A. Bobylev and I. G. Ismailov and S. K. Korovin},
     title = {Gradient methods in problems with continua of extremals},
     journal = {Differencialʹnye uravneni\^a},
     pages = {342--347},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_3_a8/}
}