Jesper V. Olsen

The lost sunspot cycle: New support from 10 Be measurements

C. Karoff, M. Knudsen, F. Inceoglu, 2014, 1412.2931.

On the Current Solar Magnetic Activity in the Light of Its Behaviour During the Holocene

R. Simoniello, C. Karoff, M. Knudsen, 2015, 1509.06182.