@INBOOK {NARAYANA:2002b, title = {An overview of sorghum viruses in Asia and Africa}, author = {Narayana, Y. and Bandyopadhyay, R. and Navi, S. and Muniyappa, V. }, editor = {Leslie, J. }, year = {2002}, type = {Sorghum and Millet Diseases}, pages = {431--439}, publisher = {Iowa State Press}, address = {Ames, USA}, }