P. S. L. E. SILVA, A. E. D. SOUSA, J. K. D. O. GOMES, and J. C. D. V. SILVA, “VARIATION ON MAIZE GREEN EARS AND GRAIN YIELD IN RESPONSE TO WEED COMPETITION”, Int. Jour. M&S, vol. 6, no. 01, May 2010, doi: 10.18512/1980-6477/rbms.v6n01p%p.