34 citations · 50 across the 4 of their papers we have counts for
1 paper · 1 filter
J. -L. Xie, X. -J. Shi, J. -C. Xu
The daily sunspot numbers of the whole disk as well as the northern and southern hemispheres from January 1, 1945 to December 31, 2010 are used to investigate the temporal variatio…