@article{VYURM_2022_14_3_a5,
     author = {V. Sh. Roitenberg},
     title = {Classification of periodic differential equations by degrees of non-roughniss},
     journal = {Vestnik \^U\v{z}no-Uralʹskogo gosudarstvennogo universiteta. Seri\^a, Matematika, mehanika, fizika},
     pages = {52--59},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VYURM_2022_14_3_a5/}
}