Weed Risk Assessment based on Pheloung et al. (1999) for non-native biofuel crops under various scenarios. (Barney JN, DiTomaso JM 2008. Non-native species and bioenergy: Are we cultivating the next invader? BioScience)
For switchgrass cultivated as biofuel in California, invasiveness limited by several steps by Joseph M. DiTomaso, Jacob N. Barney, J. Jeremiah Mann, and Guy Kyser