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Transactions of the International Astronomical Union, Volume XXIIIB/en-ca/transactions-of-the-international-astronomical-union-volume-xxiiib/47E62099-355E-4087-835D-F47CE7CEEC05.html47E62099-355E-4087-835D-F47CE7CEEC05
Transactions of the International Astronomical Union, Volume XXIIIB