Ocaña, Manuel Chapela-Campa, David Álvarez, Pedro Hernández, Noelia Mucientes, Manuel Fabra, Javier Llamazares, Ángel Lama, Manuel Revenga, Pedro A. Bugarín, Alberto García-Garrido, Miguel A. Alonso, José M. Automatic linguistic reporting of customer activity patterns in open malls Multimed. Tools Appl. 10.1007/s11042-021-11186-3 2022 2022