Evolution and Flare Activity of δ $\delta$ -Sunspots in Cycle 23
Crossref DOI link: https://doi.org/10.1007/s11207-015-0720-1
Published Online: 2015-08-11
Published Print: 2015-07
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Takizawa, K.
Kitai, R.
Text and Data Mining valid from 2015-07-01