DELL' ISOLA, F.; RUTA, G.C. Outlooks in Saint-Venant theory III. Torsion and flexure in sections of variable thickness by formal expansions. Archives of Mechanics, Warsaw, Poland, v. 49, n. 2, p. 321–343, 1997. Disponível em: https://am.ippt.pan.pl/index.php/am/article/view/v49p321. Acesso em: 8 dec. 2025.