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- [3] The north-south asymmetry of solar activity SOLSPA 2001: PROCEEDINGS OF THE SECOND SOLAR CYCLE AND SPACE WEATHER EUROCONFERENCE, 2002, 477 : 201 - 204
- [8] ON A POSSIBLE NORTH-SOUTH ASYMMETRY IN SOLAR WIND IRISH ASTRONOMICAL JOURNAL, 1965, 7 (2-3): : 82 - &