@article{IZKAB_2014_1_a8,
     author = {P. E. Marchenko},
     title = {Some theoretical questions of the analysis of
},
     journal = {News of the Kabardin-Balkar scientific center of RAS},
     pages = {56--66},
     publisher = {mathdoc},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IZKAB_2014_1_a8/}
}