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Lojewski, N. R., D. G.  Fischer, J. K.  Bailey, J. A.  Schweitzer, T. G.  Whitham, and S. C.  Hart. 2009. Genetic basis of aboveground productivity in two native Populus species and their hybrids.. Tree physiology 29:1133 - 42.

Evans, L. M., G. J.  Allan, S. M.  Shuster, S. A.  Woolbright, and T. G.  Whitham. 2008. Tree hybridization and genotypic variation drive cryptic speciation of a specialist mite herbivore.. Evolution; international journal of organic evolution 62:3027 - 40.

Gehring, C. A., R. C.  Mueller, and T. G.  Whitham. 2006. Environmental and genetic effects on the formation of ectomycorrhizal and arbuscular mycorrhizal associations in cottonwoods.. Oecologia 149:158 - 64.