Ohimain, Elijah I., Patrick E. Tuwon, and Ekiemene A. Ayibaebi. 2013. “Traditional Fermentation and Distillation of Raffia Palm Sap for the Production of Bioethanol in Bayelsa State, Nigeria”. Journal of Technology Innovations in Renewable Energy 1 (2):131-41. https://doi.org/10.6000/1929-6002.2012.01.02.8.