Wannier-Stark ladders in free oscillations of Timoshenko-Ehrenfest beams W. Rodríguez-Cruz, J. C. Torres-Guzmán and A. Díaz-de-Anda EPL, 133 6 (2021) 64001 Published online: 11 May 2021 DOI: 10.1209/0295-5075/133/64001