SPEKTRA, Editor. FRONT MATTER SPEKTRA VOLUME 4 ISSUE 1, APRIL 2019. Spektra: Jurnal Fisika dan Aplikasinya, [S. l.], v. 4, n. 1, 2019. DOI: 10.21009/SPEKTRA.04100. Disponível em: https://journal.unj.ac.id/unj/index.php/spektra/article/view/12322. Acesso em: 24 nov. 2024.