@article{CMFD_2018_64_2_a0,
     author = {V. V. Katrakhov and S. M. Sitnik},
     title = {The transmutation method and boundary-value problems for singular elliptic equations},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {211--426},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2018_64_2_a0/}
}