Soekanto, Sri Angky, et al. “COMPARISON OF THE POTENCY OF SEVERAL FLUORIDE-BASED VARNISHES AS AN ANTICARIOGENIC ON CALCIUM, PHOSPHATE, AND FLUORIDE ION LEVELS”. International Journal of Applied Pharmaceutics, vol. 9, Jan. 2018, pp. 55-59, doi:10.22159/ijap.2017.v9s2.14.