Ismiyatin, Kun, Ari Subiyanto, Ika Tangdan, Rahmi Nawawi, Reinold C. Lina, Rizky Ernawati, and Hendy Jaya Kurniawan. 2019. “The Effects of Different 650 Nm Laser Diode Irradiation Times on the Viability and Proliferation of Human Periodontal Ligament Fibroblast Cells”. Dental Journal 52 (3):142-46. https://doi.org/10.20473/j.djmkg.v52.i3.p142-146.