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H. W. Newton and A. S. Milson, “Note on the Observed Differences in Spottedness of the Sun’s Northern and Southern Hemispheres,” Monthly Notices of Royal Astronomical Society, Vol. 115, 1955, pp. 398-404.

has been cited by the following article:

• TITLE: Asymmetry of Sunspot Distribution in KAU Solar Observations during 22 and 23 Solar Cycles

  AUTHORS: Hassan Mohammad Basurah, Amerah Fouad Dhignah, Fouad Yousef Kamal

  KEYWORDS: Sunspots; Long Solar Cycles; North-south Solar Asymmetry

  JOURNAL NAME: International Journal of Astronomy and Astrophysics, Vol.3 No.4, December 4, 2013

  ABSTRACT: The King Abdul Aziz University (KAU) solar observations of Sunspot on daily passes from 1981 to 2009 are used to investigate the North-South asymmetry variation of the sunspot numbers and its area. We found that the asymmetry dominated to be southern during the last two solar cycles, which evidently exists following a long-term characteristic time scale. Our results were in compliance with the global asymmetry.