Rodríguez-Martínez, D. C., and D. F. Lafargue-Pérez. “Experimental Comparison of Vegetable and Mineral Based Pils As Lubricants in Tribological Joint Steel-Babbit”. Chemical Technology, Vol. 33, no. 1, Feb. 2016, pp. 74-80, doi:10.1590/2224-6185.2013.1.%x.