Bettiol, Wagner, et al. “Control, With Organic Matter, of Cucumber Damping-off Caused by <i>Pythium ultimum< I> Trow”. Pesquisa Agropecuaria Brasileira, vol. 32, no. 1, Jan. 1997, pp. 57-61, doi:10.1590/S1678-3921.pab1997.v32.4607.