GRZĘDZIŃSKI, J. A Certain Approximate Solutions of Nonlinear Flutter Equation. Engineering Transactions, [S. l.], v. 47, n. 1, p. 39–55, 2015. DOI: 10.24423/Engtrans.613.1999. Disponível em: https://et3.ippt.pan.pl/index.php/et/article/view/613. Acesso em: 24 apr. 2025.