Eckford, R. E., J. C. Newman, X. Li, and P. R. Watson. 2012. “Thermophilic Anaerobic Digestion of Cattle Manure Reduces Seed Viability for Four Weed Species”. International Journal of Agricultural and Biological Engineering 5 (1):71-75. https://doi.org/10.25165/ijabe.v5i1.567.