Purcino, H. M.A., A. A.C. Purcino, and J. Q. Lynd. 2014. “Soil Fertility Effects Governing Growth and Nodule Parameters at Anthesis of Two Winged Bean Cultivars With a Typic Eutrustox”. Pesquisa Agropecuaria Brasileira 16 (5):633-44. https://doi.org/10.1590/S1678-3921.pab1981.v16.17042.