@article{MMO_2014_75_2_a1,
     author = {N. F. Valeev and \`E. A. Nazirova and Ya. T. Sultanaev},
     title = {Distribution of the eigenvalues of singular differential operators in a space of vector-functions},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {107--123},
     publisher = {mathdoc},
     volume = {75},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_2014_75_2_a1/}
}