. Benson, D.R. (1982). Isolation of Frankia Strains from Alder Actinorhizal Root Nodules. Applied Environmental Microbiology, 44(2): 461-465.
. Benson, D.R., and Silvestre, W.B. (1993). Biology of Frankia strains, actinomycete symbionts of actinorhizal plants. Microbiological Reviews, 57(2): 293-319.
. Burns, R.C., and Hardy, R.W.F. (1975). Nitrogen fixation in bacteria and higher plants. Springer-Verlag, New York.
. Wolters, D.J., Akkermans, A.D.L., and Van Dijk, C. (1997). Ineffective Frankia Strains in wet stands of Alnus Glutinosa L. Gaertn. In the Netherlands. Soil Biology and Biochemistry, 29(11-12): 1707-1712.
. Newton, M., El Hassen, B.A., and Zavitkovski, J. (1968). Role of red alder in western Oregon forest succession. In: "Biology of Alder". U.S. Department of Agriculture., Forest Service. Pacific Northwest Forest Range Experiment Station, Portland, Oregon, 73-83.
. Wheeler, C.T., Hollingsworth, M.K., Hooker, J.E., McNeill, J.D., Mason, W.L., Moffat, A.J. and Sheppard, L.J. (1991). The effect of inoculation with either cultured Frankia or crushed nodules on nodulation and growth of Alnusrubra and Alnus glutinosa seedlings in forest nurseries. Forest Ecology and Management, 43(1-2): 153-166.
. Schrader, J.A., and Graves, W.R. (2008). Nodulation and Growth of Alnus nitida and Alnus maritime Inoculated with Species-speciﬁc and Non-speciﬁc Frankia.Journal of Environmental Horticulture, 26(1): 29-34.
. Moffat, A.J. (2000). Effect of inoculation with Frankia on the growth and nutrition of alder species and inter planted Japanese larch on restored mineral workings. Forestry, 73(3): 215-223.
. Welsh, A.K., Dawson, J.O., Gottfried, G.J. and Hahn, D. (2009). Diversity of Frankia populations in root nodules of geographically isolated Arizona alder trees in central Arizona (United States). Applied and Environmental Microbiology, 75(21): 6913-6918.
. Myrold, D.D. (1994). Frankia and the Actinorhizal Symbiosis. In: Methods of Soil Analysis, Part 2. Microbiological and Biochemical properties-SSSA Book Series, no.5., Soil Science Society of America, Madison.
. Vásquez, L., Pérez, N.O., and Valdés, M. (2000). Isolation and symbiotic characteristics of Mexican Frankia strains associated with Casuarina. Applied Soil Ecology, 14(3): 249-255.
. Reddell, P., Rosbrook, P.A., Bowen, G.D., and Gwaze, D. (1988). Growth response in casuarina cunninghamiana plantings to inoculation with Frankia. Plant and Soil, 108(1): 76-86.
. Hoagland, D.R., and Arnon, D.I. (1950). The water culture method for growing plant without soil. California Agricultural Experiment Station: Circular, California.
. Gray, J.T., and Schlesinger, W.H. (1983). Nutrient use by evergreen and deciduous shrubs in southern California. Journal of Ecology, 71: 43-56.
. Muthukumar, T., and Udaiyan, K. (2006). Growth of nursery-grown bamboo inoculated with arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria in two soil types with and without fertilizer application. New Forests, 31(3): 469-485.
. NG, B.H. (1987). The effects of salinity on growth, nodulation and nitrogen fixation of Casuarina equisetifolia. Plant and Soil, 103(1): 123-125.
. SAS Institute (2003). JMP: Statistics and graphics guide, version 5.1.SAS Institute, Cary, North Carolina.
. Oliveira, R.S., Castro, P.M.L., Dodd, J.C., and Vosatka, M. (2005). Synergistic effect of Glomus intraradices and Frankia spp. on the growth and stress recovery of Alnus glutinosa in an alkaline anthropogenic sediment. Chemosphere, 60(10): 1462-1470.
. Arnone, J.A., and Gordon, J.C. (1990). Effect of nodulation, nitrogen ﬁxation and CO2 enrichment on the physiology, growth and dry mass allocation of seedlings of Alnus rubra Bong. New Phytologist, 116: 55-66.