@article{DAN_1972_202_5_a3,
     author = {I. A. Kipriyanov and M. I. Klyuchantsev},
     title = {A singular partial differential problem with boundary conditions on a surface of singularities},
     journal = {Doklady Akademii Nauk},
     pages = {1001--1003},
     year = {1972},
     volume = {202},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_5_a3/}
}