Kubac, Lukas, Stasa, Pavel, Kodym, Oldrich (2013). M-LEARNING AS A NEXT LEVEL OF E-LEARNING. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION, 453 - 460 pp. https://doi.org/10.5593/sgem2013/be5.v2/s22.014