J. G. Guimarey, M., et al.. Lubricant Properties of Trimethylolpropane Trioleate Biodegradable Oil: High Pressure Density and Viscosity, Film Thickness, Stribeck Curves and Influence of Nanoadditives. Elsevier BV, 2021, doi:10.1016/j.molliq.2021.116410.