Parker, E. N. (1979). "Sunspots and the Physics of Magnetic Flux Tubes. I The General Nature of the Sunspot". The Astrophysical Journal230: 905–913. doi:10.1086/157150. Bibcode: 1979ApJ...230..905P.
harvard.edu
adsabs.harvard.edu
Parker, E. N. (1979). "Sunspots and the Physics of Magnetic Flux Tubes. I The General Nature of the Sunspot". The Astrophysical Journal230: 905–913. doi:10.1086/157150. Bibcode: 1979ApJ...230..905P.