L. S. Watrud, Maggard, S., Shiroyama, T., Coleman, C. G., Johnson, M. G., Donegan, K. K., Di Giovanni, G., L. Porteous, A., and E. Lee, H.,
“Bracken fern (Pteridium aquilinum L.) frond biomass and rhizosphere microbial community characteristics are correlated to edaphic factors”,
Plant and Soil, vol. 249, no. 2, pp. 359 - 371, 2003.