Vizcaíno, Altagracia M., et al. “Distribution and Frequency of the Microflora Associated With Uredospores of Hemileia Vastatrix Berk. And Br”. The Journal of Agriculture of the University of Puerto Rico, vol. 79, no. 3-4, Oct. 1995, pp. 153-62, doi:10.46429/jaupr.v79i3-4.4310.