Sabundjian, M. T., O. Arf, F. H. Kaneko, and V. Nascimento. 2014. “SOURCES NITROGEN IN BEAN WINTER IN SUCCESSION TO GRASS WITH AND WITHOUT Inoculation Azospirillum brasilense:ECONOMIC ANALYSI”. Brazilian Journal of Biosystems Engineering 8 (2). Tupã, São Paulo, Brazil:139-45. https://doi.org/10.18011/bioeng2014v8n2p139-145.