Azwarini, Rahmania, Morina A. Fathan, and Tri Widiantoro. 2024. “Grouping of Regencies/Cities in Indonesia Based on National Health Insurance (JKN) Participants With the Ensemble ROCK Approach”. JURNAL ILMIAH MATEMATIKA DAN TERAPAN 21 (2), 144 -60. https://bestjournal.untad.ac.id/index.php/JIMT/article/view/17512.