@article{DAN_1975_224_6_a4,
     author = {V. L. Levin},
     title = {Extremal problems with convex functionals that are lower semicontinuous with respect to convergence in measure},
     journal = {Doklady Akademii Nauk},
     pages = {1256--1259},
     publisher = {mathdoc},
     volume = {224},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a4/}
}