Roberto Muscia. “Magneto-Mechanical Model of Passive Magnetic Axial Bearings Versus the Eccentricity Error, Part I: Physical Mathematical Model”. Applied Computational Electromagnetics Society Journal (ACES), vol. 32, no. 08, July 2021, pp. 670-7, https://journals.riverpublishers.com/index.php/ACES/article/view/9525.