1. S. Pehan Crack propagation speed in gear with dynamical loading 1990
2. J. Flašker S. Pehan Determination of service life of gear with initiated crack in tooth root 1990
3. J. Flašker B. Aberšek J. Balič Evaluation of residual stresses and crack propagation in gears using experimental and finite element models FEM in the Design Process Bauff Canada 90