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Transactions of the American Mathematical Society, vol. 367, no. 2, page. 867 - 885, 2015-02
Transactions of the American Mathematical Society, vol. 366, no. 6, page. 3241 - 3273, 2014-06
Transactions of the American Mathematical Society, vol. 367, no. 9, page. 6085 - 6101, 2015-09