@article{ZNSL_1981_104_a12,
     author = {Ya. V. Kurylev},
     title = {On the point source on the domain's boundary},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {130--138},
     year = {1981},
     volume = {104},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_104_a12/}
}