“Research on the Optimization of Air Route Network in Henan Province from the Perspective of Spatial Interaction Intensity-Taking the Four World-class Airport Clusters as Examples”, JMSO, vol. 2, no. 1, pp. 23–37, Apr. 2024, Accessed: Dec. 23, 2024. [Online]. Available: https://itip-submit.com/index.php/JMSO/article/view/JMSO-20-DOI.pdf