@article{Szumiński:2020,
author
=
"W.Szumiński and M.Przybylska and A.Maciejewski",
title
=
"Comment on "Hyperchaos in constrained Hamiltoniansystem and its control" by J. Li, H. Wu and F. Mei",
journal
=
"Nonlinear Dynamics",
volume
=
"Vol. 101",
number
=
"no. 1",
pages
=
"639--654",
year
=
"2020",
}