Dynamical trapping in the area-preserving Hénon map Vitor Martins de Oliveira, David Ciro and Iberê Luiz Caldas Eur. Phys. J. Special Topics, 229 8 (2020) 1507-1516 Published online: 29 May 2020 DOI: 10.1140/epjst/e2020-900155-8