K. MAGNUCKI, J. LEWIŃSKI, and E. MAGNUCKA-BLANDZI, “A Shear Deformation Theory of Beams with Bisymmetrical Cross-Sections Based on the Zhuravsky Shear Stress Formula”, Eng. Trans., vol. 68, no. 4, pp. 353–370, Nov. 2020, doi: 10.24423/EngTrans.1174.20201120.