@article{ZNSL_1981_110_a10,
     author = {\`E. M. Muhamadiev},
     title = {On the normal solvability of elliptic operators in the spaces of functions on $\mathbb R^n$, {part~I}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {120--140},
     year = {1981},
     volume = {110},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_110_a10/}
}