Maravillas, Manna Joanna, Althea Mae Mendenilla, Adrian Fernando Merino, and Edna Quinto. 2018. “Development of a Method through Digital Image Analysis for Analyzing Polyaniline Based Sensors for Total Volatile Basic Nitrogen (TVBN) As Fish Freshness Indicators”. ASEAN Journal of Chemical Engineering 18 (2), 7-12. https://journal.ugm.ac.id/v3/AJChE/article/view/9019.