@INBOOK {VASAL:1980, title = {Genetic modifiers an dbreeding strategies in developing hard endosperm opaque-2 materials, edited by W.G. Pollmer and R.H. Phipps}, author = {Vasal, S. K. and Villegas, E. and Bjarnason, M. and Gelaw, B. and Goertz, P. }, year = {1980}, type = {Improvement of quality traits of maize for grain and silage use}, pages = {37--73}, publisher = {Martinus Nijhoff Publisher, b.v., The Hague}, address = {Boston, London}, }