Käpylä, M. J., Käpylä, P. J., Olspert, N., Brandenburg, A., Warnecke, J., & Gent, F. A. (2017). Multiple dynamo modes as a mechanism for long-term solar activity variations. Talk presented at SOLARNET IV MEETING: The Physics of the Sun from the Interior to the Outer Atmosphere. Lanzarote, Spain. 2017-01-16 - 2017-01-20.