Dias, Waldir Pereira, Geraldo da Silva e Souza, José Erivaldo Pereira, and João Flávio Veloso Silva. 2000. “Bootstrap Confidence Intervals As Tool to Classify Races of soybean’s Cyst Nematode”. Pesquisa Agropecuaria Brasileira 35 (2):271-75. https://doi.org/10.1590/S1678-3921.pab2000.v35.5766.