@article{MZM_2021_109_3_a13,
     author = {M. D. Ramazanov},
     title = {A {Criterion} for a {Normed} {Algebra} in the {Scale} of {Sobolev} {Spaces}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {475--478},
     publisher = {mathdoc},
     volume = {109},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_109_3_a13/}
}