VOLLÚ, R. E. ; Fogel, R. ; SANTOS, S. C. C. ; da Mota, F.F. ; SELDIN, L. . Evaluation of the diversity of cyclodextrin-producing Paenibacillus graminis strains isolated from roots and rhizospheres of different plants by molecular methods. Journal of Microbiology, v. 44, p. 591-599, 2006.