Coser, T. R.; Ramos, M. L. G.; Amabile, R. F.; Júnior, W. Q. R. Microbial Biomass Nitrogen in Cerrado Soil With Nitrogen Fertilizer Application. PAB 2007, 42 (3), 399-406. https://doi.org/10.1590/S1678-3921.pab2007.v42.7581.