Carvalho, João VidalLiberato, PedroPeña, Alejandro2022-07-142022-07-142022978-981-16-9700-5978-981-16-9701-2http://hdl.handle.net/10400.22/20671engPreface "Advances in tourism, technology and systems: selected papers from ICOTTS 2021, Volume 2"other