The Discontinuity Circa 1885 in the Group Sunspot Number
Crossref DOI link: https://doi.org/10.1007/s11207-015-0841-6
Published Online: 2016-02-01
Published Print: 2016-11
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Cliver, E. W.
Ling, A. G.
Text and Data Mining valid from 2016-02-01