@article{Raspopov2007long-term,
author={Raspopov, O.M. and Dergachev, A.V. and Kolstrom, T.. and Kuzmin, A.V. and Lopatin, E.V. and Lisitsyna, O.V.},
title={Long-term solar activity variations as a stimulator of abrupt climate change},
journal={Russian Journal of Earth Sciences},
publisher={Geophysical Center of the Russian Academy of Sciences},
year={2007},
pages={1-9},
volume={9},
issue={3},
}