Pacheco, L. P.; Barbosa, J. M.; Leandro, W. M.; Machado, P. L. O. de A.; Assis, R. L. de; Madari, B. E.; Petter, F. A. Nutrient Cycling by Cover Crops and Yield of Soybean and Rice in No-Tillage. PAB 2013, 48, 1228-1236.