ICERI 2019 [elektronický zdroj] : international conference of education, research and innovation, November 11th-13th, 2019 - Seville, Spain / zost. L. Gómez Chova, A. López Martínez, Candel I Torres . Valencia :  IATED , 2019 . 1 USB kľúč (11710 s) . ISBN 978-84-09-14755-7 .