Zulkifli, F. B., Mohmed, Z. B., & Azmee, N. A. B. (2022). Huber M-estimator for Cumulative Odds Model with Application to the Measurement of Students’ Final Exam Grades. Pakistan Journal of Statistics and Operation Research, 18(2), 337-347. https://doi.org/10.18187/pjsor.v18i2.2996