Astuti, R. T., D. S. Azahra, H. Nursyam, H. S. Yufidasari, J. R. Putra, D. Setijawati, O. S. Roshaney, and J. Hinsui. “Effect of Acid Type and Buffer-assisted Stimulation on Pepsin Recovery from Skipjack Tuna (Katsuwonus pelamis) Stomach”. Journal of Fisheries and Environment, vol. 50, no. 2, Aug. 2026, pp. 163-76, https://li01.tci-thaijo.org/index.php/JFE/article/view/270020.