1.
Information and Communication Technologies in Tourism 2021 : Proceedings of the ENTER 2021 E...
by W�rndl, Wolfgang, Koo, Chul...
ISBN: 9783030657840
2.
Information and Communication Technologies in Tourism 2022 : Proceedings of the ENTER 2022 E...
by Stienmetz, Jason L., Ferrer...
ISBN: 9783030947507