The classification of sunspot groups

This publication has 9 references indexed in Scilit:

• Preflare activity
  Solar Physics, 1989
• A new model for flux emergence and the evolution of sunspots and the large-scale fields
  Solar Physics, 1985
• Large-scale patterns formed by solar active regions during the ascending phase of cycle 21
  The Astrophysical Journal, 1983
• A secondary polar zone of solar prominences
  Solar Physics, 1973
• Hemocoagulatory properties of kupffer cells
  Bulletin of Experimental Biology and Medicine, 1970
• Sunspot Configurations and Proton Flares
  The Astrophysical Journal, 1966
• Die Flare‐Häufigkeit in Fleckengruppen unterschiedlicher Klasse und magnetischer Struktur (Mitteilungen des Astrophysikalischen Observatoriums Potsdam Nr. 87)
  Astronomische Nachrichten, 1959
• The Relations Between Eruptions and Sunspots.
  The Astrophysical Journal, 1939
• On the Types of Sun-Spot Disturbances
  The Astrophysical Journal, 1901