@article{DAN_1984_279_4_a12, author = {S. I. Chelkak}, title = {Exact conditions for regularity of generalized solutions of}, journal = {Doklady Akademii Nauk}, pages = {820--824}, publisher = {mathdoc}, volume = {279}, number = {4}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_279_4_a12/} }