De Gosson, Maurice Max Planck Institute for Mathematics, Max Planck Society;
De Gosson, M. (2009). On the usefulness of an index due to Leray for studying the intersections of Lagrangian and symplectic paths. Journal de Mathématiques Pures et Appliquées. Neuvième Série, 91(6), 598-613. doi:10.1016/j.matpur.2009.04.004.
