ICETA ICETA 2020 : proceedings, 18th IEEE International conference on emerging elearning technologies and applications, November 12-13, 2020, virtual conference Košice, Slovakia. -- 1. vyd. -- Danvers : IEEE, 2020. -- ISBN : 978-0-7381-2366-0. -- 978-0-7381-2367-7. -- CFP2038M-USB.