@article{DAN_1971_196_2_a17,
     author = {M. A. Shubin},
     title = {Pseudodifferential operators in $\mathbf{R}^n$},
     journal = {Doklady Akademii Nauk},
     pages = {316--319},
     publisher = {mathdoc},
     volume = {196},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_2_a17/}
}