@article{DAN_1982_266_5_a4,
     author = {A. A. Kulikov},
     title = {On fundamental solutions and hypoellipticity of some singular differential operators},
     journal = {Doklady Akademii Nauk},
     pages = {1049--1052},
     publisher = {mathdoc},
     volume = {266},
     number = {5},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_266_5_a4/}
}