@article{Maciejewski:2011,
author
=
"A.Maciejewski and M.Przybylska",
title
=
"Integrable deformations of integrable Hamiltonian systems",
journal
=
"Physics Letters, Section A: General, Atomic and Solid State Physics",
volume
=
"Vol. 376",
pages
=
"80--93",
year
=
"2011",
}