1. Amarger N 1974 Aspects microbiologique de la culture de la féverole au France. C R Acad. Agric. 60, 105–112.
2. Amarger N 1980 Aspects microbiologique de la culture des léguminenses. Le Sélectionneur français 28, 61–66.
3. Bergesen F J 1971 The central reaction of nitrogen fixation. Plant and Soil Spec. vol. 511–524.
4. Bond D A 1984 Yield stability of faba beans and peas.In EEC Joint trials 1980–82.Vicia faba: Agronomy, Physiology and Breeding. Eds P D Hebblethwaithe. T C K Dawkins, M C Heath and B Lockwood, pp 177–184, Martinus Nijhoff/Dr W Junk, The The Hague.
5. Burton J C, Allen O N and Berger K C 1952 The prevalence of strains ofRhizobium phaseoli in some mid-western soils. Proc. Soil Sci. Soc. Amer. 16, 167–170.