@INPROCEEDINGS {JUMBO:2007, title = {Adoption and impact of improved cassava and sweetpotato varieties on food security in Malawi}, author = {Jumbo, S. and Mahungu, N. and Mhone, A. and Moyo, C. and Sandifolo, V. and Siyeni, D. * and Nthonyiwa, A. and Sichinga, K. }, booktitle = {Proceedings of 9th ISTRC-AB symposium}, year = {2007}, pages = {26--33}, location = {Mombasa, Kenya}, note = {RTB; Root and Tuber; Cassava.; 1 - 5 November 2004}, }