@article{MGTA_2020_12_1_a4,
     author = {Alexander M. Tarasyev and Anastasiia A. Usova},
     title = {An estimate of a smooth approximation of the production function for integrtaing {Hamiltonian} systems},
     journal = {Matemati\v{c}eska\^a teori\^a igr i e\"e prilo\v{z}eni\^a},
     pages = {91--115},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MGTA_2020_12_1_a4/}
}