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OSAKA JOURNAL OF MATHEMATICS, vol. 35, no. 2, page. 407 - 415, 1998-06

JOURNAL OF THE AUSTRALIAN MATHEMATICAL SOCIETY SERIES A-PURE MATHEMATICS AND STATISTICS, vol. 63, page. 390 - 395, 1997-12

CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES, vol. 42, no. 3, page. 263 - 273, 1999-09

MEMOIRS OF THE AMERICAN MATHEMATICAL SOCIETY, vol. 246, no. 1167, 2017-03

ACTA ARITHMETICA, vol. 181, no. 3, page. 209 - 238, 2017-10

Transactions of the American Mathematical Society, vol. 366, no. 1, page. 51 - 74, 2014-01

TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, vol. 361, no. 8, page. 4471 - 4489, 2009-08

SELECTA MATHEMATICA-NEW SERIES, vol. 17, no. 3, page. 609 - 711, 2011-09

DUKE MATHEMATICAL JOURNAL, vol. 151, no. 1, page. 23 - 174, 2010-01-15

MONATSHEFTE FUR MATHEMATIK, vol. 131, no. 2, page. 109 - 122, 2000-01