Nonlinear flexure of Timoshenko–Ehrenfest nano-beams via nonlocal integral elasticity Mahdad Fazlali, S. Ali Faghidian, Mohsen Asghari and Hossein M. Shodja Eur. Phys. J. Plus, 135 8 (2020) 638 Published online: 09 August 2020 DOI: 10.1140/epjp/s13360-020-00661-9