B. Coitos et al.,  "MOG - A smart mobile system for interactive museum visits", in Multi Conf. on Computer Science and Information Systems, MCCSIS 2019 - Proc. of the Int. Conf.s on ICT, Society and Human Beings 2019, Connected Smart Cities 2019 and Web Based Communities, Kommers, P., and Peng, G. C., Ed., Porto, IADIS Press, 2019, pp. 191-198