Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil. Al-Khwarizmi Engineering Journal, [S. l.], v. 12, n. 3, p. 19–25, 2017. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/309. Acesso em: 16 apr. 2025.