RATNAM, B. S.; RAO, G. V.; JANARDHANA, G. R. Elegant universal formula to predict dynamic stability of columns subjected to axial periodic loads. Journal of Structural Engineering, [S. l.], v. 36, n. 6, p. 452–455, 2025. Disponível em: http://jose.serc.res.in/index.php/JOSE/article/view/1319. Acesso em: 4 apr. 2025.