LEHTINEN, A., and A. HANNUKKALA. “Oospores of Phytphthora Infestans in Soil Provide an Important New Source of Primary Inoculum in Finland”. Agricultural and Food Science 13, no. 4 (January 4, 2004): 399–410. Accessed November 22, 2024. https://journal.fi/afs/article/view/5765.