V. N. da Silva, L. E. de S. F. da Silva, and M. do V. B. Figueiredo, “CO-INOCULATION OF CAUPI SEEDS WITH Bradyrhizobium AND Paenibacillus AND ITS EFFICIENCY ON CALCIUM IRON AND PHOSPHORUS PLANT ABSORPTION”, Pesq. Agropec. Trop., vol. 36, no. 2, pp. 95–99, Oct. 2007.