Grouping the Number of Foreign Tourist Visits and Analysis of Tourism Competitiveness in East Java. Efficient: Indonesian Journal of Development Economics, [S. l.], v. 7, n. 1, p. 55–63, 2024. DOI: 10.15294/efficient.v7i1.4833. Disponível em: https://journal.unnes.ac.id/journals/efficient/article/view/4833. Acesso em: 6 feb. 2026.