Fitrya N, Wirman SP, Rahayu RD. Environmentally Friendly Emergency Lighting System Using Bio Batteries from Pineapple Skin Waste as Energy Source. J. Ilmu Fis. [Internet]. 2021 Sep. 6 [cited 2024 Apr. 28];13(2):118-25. Available from: http://jif.fmipa.unand.ac.id/index.php/jif/article/view/435