Xie Z, Jia P, Song J, Zhao R, Jin H. Evaluation of the Tourism Economic Spatial Network Structure of the Urban Agglomerations in the Middle Reaches of the Yellow River Based on a Modified Gravity Model. TIBE [Internet]. 2024 Sep. 2 [cited 2026 May 23];23(2 (62):319-42. Available from: https://www.zurnalai.vu.lt/TIBE/article/view/36685