1. The formation and nitrogen-fixing activity of root nodules of Alnus glutinosa under field conditions;Akkermans,1976
2. Relationships among pure cultured strains of Frankia based on host specificity;Baker;Physiol. Plant,1987
3. Separation of actinomycete nodule endophytes from crushed nodule suspensions by Sephadex fractionation;Baker;Bot. Gaz. (Chicago), Suppl.,1979
4. Frankiaceae fam. nov. (Actinomycetales) with one new combination and six new species of the genus Frankia Brunchorst 1886;Becking;Int. J. Syst. Bact.,1970
5. Dinitrogen-fixing associations in higher plants other than legumes;Becking,1977