@ARTICLE {DHLIWAYO:2009, title = {Combining ability, genetic distances, and heterosis among elite CIMMYT and IITA tropical maize inbred lines}, author = {Dhliwayo, T. and Pixley, K. and Menkir, A. and Warburton, M. }, journal = {Crop Science}, year = {2009}, volume = {49}, pages = {1201--1210}, issn = {0011-183X}, }