Bertello.pdf Development of the Ca II K-line Index
Biesecker.pdf The Boulder Sunspot Number
Clette1.pdf History of SIDC Sunspot Number
Clette2.pdf First Sunspot Workshop, Conclusions and actions
Cliver.pdf Why the Sunspot Number Needs Re-examination
Cliver1.pdf Letter about Next Workshop
Cliver2.pdf Preliminary Assignments for 2nd SSN Workshop
Cliver3.pdf IUGG-XXV: History and Calibration of Sunspot Numbers
Cnossen.pdf The effects of secular change in the internal magnetic field of the Earth on geomagnetic activity
DudokdeWit.pdf Sunspot data analysis using coherency
Hathaway.pdf Group Sunspot Numbers
Hathaway2.pdf RGO/USAF Sunspot Areas
Hathaway3.pdf The Curious Case of the Sunspot Penumbrae
Kilcik.pdf New Approach to Sunspot Number Data Set Production
Lefevre.pdf A small-sunspot deficit in cycle 23
Livingston.pdf Sunspots & Fe 15648 Å
Pevtsov.pdf Sunspot Area as SSN Correlate: Greenwich and Beyond
Schatten.pdf On Group Sunspot Number
Svalgaard.pdf Rudolf Wolf and the Sunspot Number
Svalgaard2.pdf Geomagnetic Calibration of Sunspot Numbers
Svalgaard3.pdf The Effect of Weighting in Counting Sunspots
Svalgaard4.pdf ‘The Waldmeier Discontinuity’ [at SSL, UC Berkeley]
Tapping.pdf Changes in the Relationship between F10.7 and Sunspot Number – An Update
Tapping2.pdf F10.7
Vaquero.pdf Historical Sunspot Database
White.pdf Microwave Emission and the Solar Cycle
Yigit.pdf Effects of Lower Magnetic Fields on the Thermosphere-Ionosphere