SINGH, S K; SINGH, P K; SINGH, K K; SHUKLA, K N; CHAUHAN, H S. Development of a wetting front indicator for the measurement of sub-surface wetted front advance. Journal of Agricultural Engineering, India, v. 37, n. 4, 2006. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14097. Acesso em: 6 jun. 2026.