da Silva, Dijalma Barbosa, et al. “Effects of Seed Treatment on the Emergence of Wheat and Barley at Two Sowing Depths”. Pesquisa Agropecuaria Brasileira, vol. 28, no. 3, Mar. 1993, pp. 303-11, doi:10.1590/S1678-3921.pab1993.v28.3879.