“DEVELOPMENT OF BIODEGRADABLE LUBRICATING OIL FOR TURBINE BEARING FROM PALM KERNEL AND CASTOR OILS”. FUDMA JOURNAL OF SCIENCES 9, no. 4 (April 30, 2025): 145–154. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/3318.