@article{article3117910d,
title   = {Multiple brake orbits and homoclinics in Riemannian manifolds},
author = {Giambó, Roberto and Giannoni, Fabio and Piccione, Paolo},
year = {2011},
doi = {10.1007/s00205-010-0371-1},
journal   = {Archive for Rational Mechanics and Analysis}
}