Identification of loitering human behaviour in video surveillance environments - Gómez A., H.F.; Tomás, R.M.; Tapia, S.A.; Caballero, A.F.; Ratté, S.; Eras, A.G.; González, P.L. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2015)