@article{IVM_2013_1_a4,
     author = {A. K. Ratyni},
     title = {To the theory of boundary problems for elliptic equations with superposition operators in the boundary condition},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {51--61},
     publisher = {mathdoc},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2013_1_a4/}
}