Tahvonen, R., J. Hollo, and A. Hannukkala. “Rhizoctonia Solani Damping-off on Spring Turnip Rape and Spring Rape (Brassica spp.) in Finland ”. Agricultural and Food Science, vol. 56, no. 2, May 1984, pp. 143-54, doi:10.23986/afsci.72165.