Caierão, E.; Carvalho, F. I. F. de; Floss, E. L.; Sánchez-Chacón, C. D.; Lonrecetti, C.; Marchioro, V. Effect of Severity and Incidence Levels of Crown Rust and Stem Rust on Yield of Oat Genotypes. PAB 2001, 36, 43-52.