@article{Maciejewski:2009,
author
=
"A.Maciejewski and S.Popov",
title
=
"Invariants of homogeneous ordinary differential equations",
journal
=
"Reports on Mathematical Physics",
volume
=
"Vol. 41",
number
=
"no 3",
pages
=
"287--310",
year
=
"1998",
}