Rizzo, G., G. P. Massarotti, A. Bonanno, R. Paoluzzi, M. Raimondo, M. Blosi, F. Veronesi, A. Caldarelli, and G. Guarini. “Axial Piston Pumps Slippers With Nanocoated Surfaces to Reduce Friction”. International Journal of Fluid Power, vol. 16, no. 1, Dec. 2018, pp. 1-10, doi:10.1080/14399776.2015.1006979.