Galvez, M. C., E. Vallar, T. Shiina, E. Macalalad, and P. Mandia. “Time-Domain Optical Coherence Tomography System for Determining The Extinction Coefficient and Group Refractive Index of Gelatin-Based Skin Phantoms”. Science and Technology Indonesia, vol. 6, no. 4, Oct. 2021, pp. 319-27, doi:10.26554/sti.2021.6.4.319-327.