Fakhriandi, Erdi, and Wahyuni Sofa. 2024. “NATIONAL HEALTH INSURANCE AND CATASTROPHIC HEALTH EXPENDITURE: A COMPLEMENTARY LOG-LOG APPROACH ON YOGYAKARTA’S INCIDENCE 2022”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan 18 (2), 0997-1008. https://doi.org/10.30598/barekengvol18iss2pp0997-1008.