@ARTICLE {QAMAR:1999b, title = {Introduction and management of vetch/barley forage mixtures in the rainfed areas of Pakistan 3. Residual effects on following cereal crops}, author = {Qamar, I. and Keatinge, J. and Mohammed, N. and Asghar, A. and Ajmal Khan, M. }, journal = {Australian Journal of Agricultural Research}, year = {1999}, volume = {50}, number = {1}, pages = {21--27}, issn = {0004-9409}, }