Asianingrum, Al Hujjah, et al. “Robust Mixed Geographically and Temporally Weighted Regression to Modeling the Percentage of Poverty Population in Java in 2012-2018”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 53, no. 2, Aug. 2020, pp. 186-97, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/11541.