Nonlinear Analysis and Boundary Value Problems NABVP 2018, Santiago de Compostela, Spain, September 4-7 - Area, Iván; Area, Iván; Cabada, Alberto; Cabada, Alberto; Cid, José Ángel; Cid, José Ángel; Franco, Daniel; Franco, Daniel; Liz, Eduardo; Liz, Eduardo; López Pouso, Rodrigo; López Pouso, Rodrigo; et al. (Springer International Publishing : Imprint: Springer, 2019)