Y. Sasmita, M. Budiman Johra, Y. A. Jatmiko, D. A. Lubis, R. Rahmad, and G. P. D. Sohibien, “Quantile Regression with Constrained B-Splines for Modelling Average Years of Schooling and Household Expenditure”, asks, vol. 17, no. 1, pp. 23–28, Feb. 2025.