Fakhriandi, E. and Sofa, W. 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 (May 2024), 0997-1008. DOI:https://doi.org/10.30598/barekengvol18iss2pp0997-1008.