Grand minima and maxima of solar activity: new observational constraintsIlya Usoskin, G. A. Kovaltsov|Astronomy and Astrophysics|2007Cited by 460
A history of solar activity over millenniaIlya Usoskin|Living Reviews in Solar Physics|2017Cited by 446
A History of Solar Activity over MillenniaIlya Usoskin|Living Reviews in Solar Physics|2013Cited by 407
Force-field parameterization of the galactic cosmic ray spectrum: Validation for Forbush decreasesIlya Usoskin, S. Ricciarini, M. Boezio et al.|Advances in Space Research|2015Cited by 29