Faccini, D.E. and Nisensohn, L.A. (1994) “Amaranthus quitensis population dynamics. Influence of chemical and mechanical treatments in a soybean crop”, Pesquisa Agropecuaria Brasileira, 29(7), pp. 1041–1050. doi:10.1590/S1678-3921.pab1994.v29.4146.