Chagas Junior, A. F., Oliveira, L. A. de and Oliveira, A. N. de (2009) “Genetic characterization of rhizobia isolated from Amazonas soils based on the technique of PCR-RFLP”, Semina: Ciências Agrárias, 30(4), pp. 841–846. doi: 10.5433/1679-0359.2009v30n4p841.