Selyaev, Vladimir, et al. “DETERMINATION OF BENDING OF A BEAM FROM A NONLINEAR DEFORMABLE MATERIAL BY RITZ-TIMOSHENKO METHODS AND FINITE DIFFERENCES TAKING INTO ACCOUNT DEGRADATION FUNCTIONS OF CROSS SECTION RIGIDITY”. International Journal for Computational Civil and Structural Engineering, vol. 18, no. 2, June 2022, pp. 85-97, doi:10.22337/2587-9618-2022-18-2-85-97.