@article{IVM_1999_2_a3,
     author = {S. A. Gusarenko},
     title = {On variational problems with linear constraints},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {30--44},
     publisher = {mathdoc},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1999_2_a3/}
}