@article{MZM_2020_107_4_a0,
     author = {E. R. Avakov and G. G. Magaril-Il'yaev},
     title = {Gamkrelidze {Convexification} and {Bogolyubov's} {Theorem}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {483--497},
     publisher = {mathdoc},
     volume = {107},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2020_107_4_a0/}
}