%0 Journal Article %T Existence and stability of limit cycles in the model of a planar passive biped walking down a slope %A Oleg Makarenkov %J - %D 2020 %R 10.1098/rspa.2019.0450 %X We consider the simplest model of a passive biped walking down a slope given by the equations of switched coupled pendula (McGeer T. 1990 Passive dynamic walking. Int. J. Robot. Res. 9, 6282. (doi:.. %U https://royalsocietypublishing.org/doi/10.1098/rspa.2019.0450