Sunspot numbers during 1736–1739 revisited
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[1] J. Vaquero. Historical sunspot observations: A review , 2007, astro-ph/0702068.
[2] R. Trigo,et al. A "lost" sunspot observation in 1785 , 2005 .
[3] I. Usoskin,et al. Long-Term Solar Activity: Direct and Indirect Study , 2004 .
[4] J. Vaquero. On the solar activity during the year 1784 , 2004 .
[5] I. Usoskin,et al. Reconstruction of Monthly and Yearly Group Sunspot Numbers From Sparse Daily Observations , 2003 .
[6] Douglas V. Hoyt,et al. Group Sunspot Numbers: A New Solar Activity Reconstruction , 1998 .