Spektra, Editor. “BACK MATTER SPEKTRA VOLUME 5 ISSUE 3, DECEMBER 2020”. Spektra: Jurnal Fisika dan Aplikasinya 5, no. 3 (December 31, 2020). Accessed November 24, 2024. https://journal.unj.ac.id/unj/index.php/spektra/article/view/18298.