Agum, J.M.G.R., Bernardo, K.A.D.C., Carreon, P.J.M., Galicia, G.F., Intal, J.Q., Rongavilla, K.R.P. and Subida, A.N. 2007. Determining the freshness of Oreochromis niloticus niloticus (Tilapia) by NNIR spectroscopy. Proceedings of the Samahang Pisika ng Pilipinas, 25(1), SPP-2007-PA-22. URL: https://proceedings.spp-online.org/article/view/SPP-2007-PA-22.