Pimentel, Márcio Sampaio, Helvécio De-Poli, Adriana Maria de Aquino, Maria Elisabeth Fernandes Correia, and Janaina Ribeiro Costa Rouws. “Bioindicators of Soil Quality in Coffee Organic Cultivation Systems”. Pesquisa Agropecuaria Brasileira 46, no. 5 (July 28, 2011): 546–553. Accessed June 1, 2026. https://apct.sede.embrapa.br/pab/article/view/9785.