@article{Stachowiak:2021,
author
=
"T.Stachowiak and A.Maciejewski",
title
=
"Non-Integrability of the Kepler and the Two-Body Problems on the Heisenberg Group",
journal
=
"Symmetry, Integrability and Geometry - Methods and Applications",
volume
=
"Vol. 17",
pages
=
"1--12",
year
=
"2021",
}