Volume 17, Issue 2, February 2016, Pages 767-770
Volume 17, Issue 1, January 2016, Pages 58-88
Volume 14, Issue 11, November 2013, Pages 7029-7032
Volume 13, Issue 9, September 2012, Pages 4801-4805
Volume 13, Issue 5, May 2012, Pages 1753-1755
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