James, T.K., P.D. Champion, C.A. Dowsett, M.R. McNeill, and G.J. Houliston. 2014. “Identification of Weed Seeds in Soil Samples Intercepted at the New Zealand Border”. New Zealand Plant Protection 67 (January):26-33. https://doi.org/10.30843/nzpp.2014.67.5740.