Uddin, M. S., M. Amiruzzaman, S. . A. Bagum, M. A. Hakim, and M. R. Ali. “COMBINING ABILITY AND HETEROSIS IN MAIZE (Zea Mays L.)”. Bangladesh Journal of Plant Breeding and Genetics, vol. 21, no. 1, June 2008, pp. 21-28, doi:10.3329/bjpbg.v21i1.17045.