Yulianti, Ian, Jauhar Azka, Ngurah Made Darma Putra, and Budi Astuti. 2019. “BURIED WAVEGUIDE POLYMETHYLMETHACRYLATE MODELING FOR REFRACTIVE INDEX SENSOR APPLICATION USING FINITE ELEMENT METHOD”. Spektra: Jurnal Fisika Dan Aplikasinya 4 (3), 133 -42. https://doi.org/10.21009/SPEKTRA.043.04.