@ARTICLE {THOTTAPPILLY:1993d, title = {Viruses and virus diseases of maize in tropical Africa}, author = {Thottappilly, G. and Bosque-Perez, N. A. and Rossel, H. W. }, journal = {Plant Pathology}, year = {1993}, volume = {42}, number = {4}, pages = {494--509}, issn = {0032-0862}, }