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Fine structure in sunspots: I. Sizes and lifetime of umbral dots
- 1.SOBOTKA, Michal, BRANDT, P. N., SIMON, G. W. Fine structure in sunspots: I. Sizes and lifetime of umbral dots. Astronomy & Astrophysics. 1997, 328(2), 682-688. ISSN 0004-6361. E-ISSN 1432-0746.
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