Davison J, Öpik M, Daniell TJ, Moora M, Zobel M. (2011) Arbuscular mycorrhizal fungal communities in plant roots are not random assemblagesFEMS Microbiology Ecology 78(1): 103115. http://onlinelibrary.wiley.com/doi/10.1111/j.1574-6941.2011.01103.x/abstract