James, D.E., C.D. Fletcher, and D.A.J. Teulon. “Insecticide Use Patterns for Aphids and Virus Incidence in Autumn Sown Cereals in Canterbury”. New Zealand Plant Protection 57 (August 1, 2004): 340–340. Accessed October 23, 2021. https://journal.nzpps.org/index.php/nzpp/article/view/6948.