Z. T. Rony, R. Jefri, A. Rusmardiana, S. A. Pramono, and Z. Mamadiyarov, “Downside Risk Measurement of Indonesian Financial and Energy Securities: A Value at Risk Perspective”, J. Appl. Sci. Eng. Technol. Educ., vol. 7, no. 2, pp. 222–230, Aug. 2025.