T. Prasetyadi, B. Irawan, M. K. Purwanegara, B. Suharno, and S. Supriadi, “CYTOTOXICITY OF IONS RELEASED FROM 17-4 PRECIPITATION HARDENING STAINLESS STEEL ORTHODONTIC BRACKETS IN ARTIFICIAL SALIVA”, Int J App Pharm, vol. 9, pp. 71–73, Jan. 2018.