SINGH, Matber; DAS, S.K.; AVASTHE, R.K. Effect of multipurpose trees on production of large cardamom and soil fertility in agroforestry systems in Sikkim, Himalaya. Indian Journal of Agroforestry, India, v. 20, n. 2, 2020. Disponível em: https://epubs.icar.org.in/index.php/IJA/article/view/96728. Acesso em: 27 jun. 2026.