INTED2021 Proceedings [elektronický zdroj] = 15th International Technology, Education and Development Conference, Online Conference 8-9 March, 2021 / ed. Goméz L Chova, A. López Martínez, Candel I Torres . Burjassot, Valencia :  IATED , 2021 . 1 online zdroj [11 000] s . ISBN 978-84-09-27666-0
https://doi.org/10.21125/inted.2021 .