Monteiro, A.; Bento, M.; Lencastre, J.; Pereira, M.; Ramos, A.; Osório, A. J.; Silva, B. Challenges of Mobile Learning – a Comparative Study on Use of Mobile Devices in Six European Schools: Italy, Greece, Poland, Portugal, Romania and Turkey. R Est Inv Psico y Educ 2017, No. 13, 352-357. https://doi.org/10.17979/reipe.2017.0.13.3229.