Rusgiyono, Agus, Yasmine Orsini, and Miftahul Jannah. “Robust M-Estimator Modelling With Huber and Andrew Weighting Functions on Poverty Levels in North Sumatra”. International Journal Of Mathematics And Computer Research 13, no. 06 (June 4, 2025): 5292-5298. Accessed May 19, 2026. https://www.ijmcr.everant.org/index.php/ijmcr/article/view/978.