@article{SM_1995_186_6_a4,
     author = {M. A. Sychev},
     title = {Necessary and sufficient conditions in semicontinuity and convergence theorems with a~functional},
     journal = {Sbornik. Mathematics},
     pages = {847--878},
     publisher = {mathdoc},
     volume = {186},
     number = {6},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_186_6_a4/}
}