Osório, Eduardo Allgayer, et al. “Wheat Cultivar Adaptations in Rio Grande Do Sul. I. Regional Adaptation of Early Cultivars”. Pesquisa Agropecuaria Brasileira, vol. 9, no. 10, Apr. 2014, pp. 151-4, doi:10.1590/S1678-3921.pab1974.v9.17277.