Mustonen, E. A., M. Tuori, P. Kurki, M. Isolahti, J. Taponen, and A. Vanhatalo. “Variety, Time of Harvest and Conditions During Growing Season Have Impact on Red Clover Isoflavone Content”. Agricultural and Food Science, vol. 27, no. 2, June 2018, pp. 102–109, doi:10.23986/afsci.69781.