1. AOAC (1984). Official methods of analysis. Washington, DC: Association of Official Analytical Chemist.
2. Biological nitrogen fixation in the tropics: Social and economic contribution of soil nitrogen, bacterial activity and productivity of associated maize crops;Döbereiner;Experimental Agriculture,1997
3. Effect of inoculation with Rhizobium on the seed chemical and physical properties of legumes;Elsheikh;Annals of Applied Biology,2001
4. A note on the effect of intercropping and Rhizobium inoculation on seed quality of faba bean (Vicia faba L.);Elsheikh;University of Khartoum Journal of Agricultural Sciences,2000
5. Effect of Rhizobium inoculation, organic and chemical fertilizers on proximate composition, in vitro protein digestibility (IVPD), tannin and sulphur content of faba beans;Elsheikh;Food Chemistry,1997