A. M. Larobis and M. S. Frias, “Multilevel Analysis of Academic Factors Influencing Academic Outcomes in Mathematics”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 7, no. 5, pp. 2349–2360, May 2026, doi: 10.11594/ijmaber.07.05.32.