@article{IZKAB_2013_3_a1,
     author = {P. E. Marchenko and G. V. Chernyshev},
     title = {Conceptual aspects of creation of an instrumental
},
     journal = {News of the Kabardin-Balkar scientific center of RAS},
     pages = {12--18},
     publisher = {mathdoc},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IZKAB_2013_3_a1/}
}