Alberto Abbondandolo, Leonardo Macarini, Marco Mazzucchelli, Gabriel Paternain. Infinitely many periodic orbits of exact magnetic flows on surfaces for almost every subcritical energy level.
Journal of the European Mathematical Society, European Mathematical Society, 2017, 19, pp.551 - 579.
⟨10.4171/JEMS/674⟩.
⟨ensl-01475277⟩