1. Adiguzel A, Ogutcu H, Baris O, Karadayi M, Gulluce M, Sahin F (2010) Isolation and characterization of Rhizobium strains from Wild Vetch collected from High Altitudes in Erzurum-Turkey. Rom Biotech Lett 15(1):5017–5024
2. Amanuel G, Kühne RF, Tanner DG, Viek PLG (2000) Biological nitrogen fixation in faba bean (Vicia faba L.) in the Ethiopian highlands as affected by P fertilization and inoculation. Biol Fertil Soils 32:353–359
3. Ausubel FM, Brent R, Kingston RE, Moore DD, Seidman JG, Smith JA, Struhl K (2002) Short protocols in molecular biology. John Wiley and sons Inc, Chichester
4. Benhizia Y, Benhizia H, Benguedouar A, Muresu R, Giacomini A, Squartini A (2004) Gamma proteobacteria can nodulate legumes of the genus Hedysarum. Syst Appl Microbiol 27:462–468
5. Choi MI, Lee DK, Noh EW, Lee JS (1994) Isolation of nod F from Frankia spp. Symbiotic with Alnus species. Korean J Breed 27:69–72