Jan Steininger, Stefan Medvecky, Robert Kohar, and Tomas Capak. “Optimization Procedure of Roller Elements Geometry With Regard to Durability of Spherical Roller Bearings”. Communications - Scientific Letters of the University of Zilina, Vol. 22, no. 2, Apr. 2020, pp. 68-72, doi:10.26552/com.C.2020.2.68-72.