VERMA, A K; GUPTA, S K; SINGH, K K; CHAUHAN, H S. Design of Bi-Level Drainage Systems: An Analytical Solution Using Inversion Theorem. Journal of Agricultural Engineering, India, v. 44, n. 4, 2007. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14465. Acesso em: 29 oct. 2025.