Willian Pies, Tadeu Werlang, Ana Caroline Pereira da Luz, Leandro Galon, and Siumar Pedro Tironi. “Competitive Barley Ability Coexisting With Ryegrass Densities”. Brazilian Journal of Agricultural Sciences, vol. 14, no. 2, June 2019, pp. 1-6, doi:10.5039/agraria.v14i2a5630.