@article{DAN_1996_348_3_a0,
     author = {A. V. Arutyunov},
     title = {On the theory of abnormal extremal problems with a},
     journal = {Doklady Akademii Nauk},
     pages = {295--298},
     publisher = {mathdoc},
     volume = {348},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_348_3_a0/}
}