@article{Stachowiak:2015,
author
=
"T.Stachowiak and W.Szumiński",
title
=
"Non-integrability of restricted double pendula",
journal
=
"Physics Letters, Section A: General, Atomic and Solid State Physics",
volume
=
"Vol. 379",
number
=
"no. 47--48",
pages
=
"3017--3024",
year
=
"2015",
}