SPEKTRA, Editor. Front Matter SPEKTRA Volume 9 Issue 1, April 2024. Spektra: Jurnal Fisika dan Aplikasinya, [S. l.], v. 9, n. 1, 2024. DOI: 10.21009/SPEKTRA.09100. Disponível em: https://journal.unj.ac.id/unj/index.php/spektra/article/view/44624. Acesso em: 21 dec. 2024.