Sunspot Numbers and Areas from the Madrid Astronomical Observatory (1876 – 1986)
Crossref DOI link: https://doi.org/10.1007/s11207-014-0567-x
Published Online: 2014-07-23
Published Print: 2014-11
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Aparicio, A. J. P.
Vaquero, J. M.
Carrasco, V. M. S.
Gallego, M. C.
Text and Data Mining valid from 2014-07-23