@article{CHEB_2022_23_1_a15, author = {R. R. Mukhin}, title = {On the {Poincar\'e--Birkhoff} theorem as the important result of the theory of dynamical systems}, journal = {\v{C}eby\v{s}evskij sbornik}, pages = {209--222}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {2022}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CHEB_2022_23_1_a15/} }