Zamhari, K A. “PEMODELAN PENURUNAN KONDISI PERKERASAN KAKU DI INDONESIA”. Jurnal Jalan Jembatan, vol. 16, no. 3, Apr. 2019, pp. 84-90, https://binamarga.pu.go.id/jurnal/index.php/jurnaljalanjembatan/article/view/775.