Efstathios VELISSARIOU; Thomas POULIOS; Christos AMOIRADIS. Establishment of Sustainable Tourism Observatory in the Northern Sporades Islands in Greece. Research Advances in Environment, Geography and Earth Science Vol. 4, [S. l.], p. 87–103, 2024. DOI: 10.9734/bpi/raeges/v4/463. Disponível em: https://stm.bookpi.org/RAEGES-V4/article/view/14826. Acesso em: 4 jun. 2026.