Thordal-Christensen, Hans, Per L. Gregersen, Jan B. Andersen, and Viggo Smedegaars-Petersen. “Induction of Defence Reactions in Plants ”. Agricultural and Food Science 59, no. 3 (July 1, 1987): 231–249. Accessed December 19, 2024. https://journal.fi/afs/article/view/72258.