Georgiades, F. (2026). Corrigendum/Addendum in ’Georgiades, F., 2018, Equilibrium Points with Their Associated Normal Modes Describing Nonlinear Dynamics of a Spinning Shaft with Non-Constant Rotating Speed, Journal of Vibration Testing and System Dynamics, 2(4), 327-373’. Journal of Vibration Testing and System Dynamics, 3(2), 233-235. https://doi.org/10.5890/JVTSD.2019.06.005