@ARTICLE {BLADE:1992, title = {Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria}, author = {Blade, S. and Mather, D. E. and Singh, B. and Smith, D. L. }, journal = {Euphytica}, year = {1992}, volume = {61}, number = {3}, pages = {193--201}, issn = {0014-2336}, doi = {10.1007/bf00039658}, }