“Pi statistics underlying the evaluation of stability, adaptability and relation between the genetic structure and homeostasis in popcorn - DOI: 10.4025/actasciagron.v32i2.7312”, Acta Sci. Agron., vol. 32, nº 2, p. 269–277, abr. 2010, doi: 10.4025/actasciagron.v32i2.7312.