Qumairoh, Umayatul, et al. “Pengaruh Paparan Medan Magnet ELF (Extremely Low Frequency) Terhadap Derajat Keasaman (pH) Udang Vaname”. Jurnal Fisika Unand, vol. 10, no. 1, Feb. 2021, pp. 55-61, doi:10.25077/jfu.10.1.55-61.2021.