@article{MZM_1981_30_3_a11,
     author = {\`E. M. Muhamadiev},
     title = {Investigations in the theory of bounded and periodic solutions of differential equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {443--460},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_30_3_a11/}
}