[1]
A. Cargnelutti Filho, S. J. Lopes, B. Brum, M. Toebe, T. R. da Silveira, and G. Casarotto, “Sample size to estimate the Pearson correlation coefficient among characters of castor bean”, Sem. Ci. Agr., vol. 33, no. 3, pp. 953–962, Jun. 2012.