Lagrangian Flow Network approach to an open flow model Enrico Ser-Giacomi, Víctor Rodríguez-Méndez, Cristóbal López and Emilio Hernández-García Eur. Phys. J. Special Topics, 226 9 (2017) 2057-2068 Published online: 21 June 2017 DOI: 10.1140/epjst/e2017-70044-2