V. D. Tran, P. T. Pham, T. S. N. T. C. Lam, X. L. Tran, and M. T. L. Le, “Theoretical Foundations of Student Tracking into Vocational Pathways after Lower Secondary Education: International Perspectives and Policy Recommendations for Vietnam”, ajes, vol. 1, no. 3, pp. 46–80, Dec. 2026.