Weeds as a source of plant growth promoting rhizobacteria in agricultural soils.

Sturz, A.V., Matheson, B.G., Arsenault, W.J., Kimpinski, J., and Christie, B.R. (2001). "Weeds as a source of plant growth promoting rhizobacteria in agricultural soils.", Canadian Journal of Microbiology, 47(11), pp. 1013-1024.