VIJAYA GOPAL, A.; GOSAL, S.K.; KAUR, Jupinder. Diversity of nitrogen fixing bacteria in rhizospheric soils of citrus–poplar cropping system of Punjab. Indian Journal of Agroforestry, India, v. 23, n. 1, 2021. Disponível em: https://epubs.icar.org.in/index.php/IJA/article/view/114608. Acesso em: 19 oct. 2025.