Yakhamid, Rezky Yayang. “Spatial Modelling for Regency & City Covid-19 Alertness Index After Eid Holiday in Central Java Province”. Jurnal Spatial Wahana Komunikasi Dan Informasi Geografi, vol. 21, no. 2, Oct. 2021, pp. 16-25, https://journal.unj.ac.id/unj/index.php/spatial/article/view/22997.