Springer Proceedings of Mathematics and Statistics, vol. 144, page. 369 - 377, 2015-08
MEMOIRS OF THE AMERICAN MATHEMATICAL SOCIETY, vol. 209, no. 984, page. 1 - +, 2011-01
COMPLEX VARIABLES AND ELLIPTIC EQUATIONS, vol. 54, no. 3-4, page. 355 - 369, 2009-01
BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY, vol. 45, no. 3, page. 523 - 561, 2008-08
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, vol. 335, no. 1, page. 332 - 340, 2007-11-01
AMERICAN MATHEMATICAL MONTHLY, vol. 112, no. 7, page. 585 - 601, 2005-08
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, vol. 281, no. 2, page. 417 - 424, 2003-05-15
ILLINOIS JOURNAL OF MATHEMATICS, vol. 45, no. 4, page. 1273 - 1299, 2001-01
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, vol. 179, no. 2, page. 463 - 482, 1993-11-01