Sixtus, C., G. Hill, and R. Scott. “Impact of <i>Exapion ulicis</i≫ (Frster) (Coleoptera Apionidae) on Gorse Seed Viability”. New Zealand Plant Protection, vol. 56, Aug. 2003, pp. 206-10, doi:10.30843/nzpp.2003.56.6092.