Competition and Coexistence In a Multi-partner Mutualism: Interactions Between two Fungal Symbionts of the Mountain Pine Beetle In Beetle-attacked Trees. 2009. Bleiker, K.P.; Six, D.L. Microbial Ecology 57(1):191–202.
Effects of water potential and solute on the growth and interactions of two fungal symbionts of the mountain pine beetle. 2009. Bleiker, K.P.; Six, D.L. Mycological Research 113:3-15.
Genetic diversity and the presence of two distinct groups in Ophiostoma clavigerum associated with Dendroctonus ponderosae in British Columbia and the Northern Rocky Mountains. 2007. Lee, S.; Hamelin, R.C.; Six, D.L., Breuil, C. Phytopathol. 97(9): 1177-1185.