@article{DE_2002_38_1_a15,
     author = {S. B. Rukhlina},
     title = {A {Class} of {Extremal} {Problems} for {Partial} {Differential} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {102--110},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_1_a15/}
}