Y. Zheng, S. Cao, L. Yin, and C. Wang, “Study of the Nonlinear Effects of Population Aging on Local Government Debt: -- Empirical Analysis based on Panel Threshold Regression Model”, JID, vol. 3, no. 1, pp. 44–50, May 2023, doi: 10.54097/jid.v3i1.8418.