JPFA, E. Acknowledgement. Jurnal Penelitian Fisika dan Aplikasinya (JPFA), [S. l.], v. 5, n. 2, p. 70, 2015. DOI: 10.26740/jpfa.v5n2.p70. Disponível em: https://journal.unesa.ac.id/index.php/jpfa/article/view/827. Acesso em: 7 may. 2024.