@article{ZNSL_1978_78_a12,
     author = {B. G. Nikolaev},
     title = {An approach to solving problems in the case of annular, asymmetric regions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {174--183},
     publisher = {mathdoc},
     volume = {78},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a12/}
}