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Kil H. Kwon, D. H. Kim, S.H. Kim, and Xin Li, Best polynomial approximation in Sobolev-Laguerre and Sobolev-Legendre spaces, Const. Approx. 18, 2002, 551-568.
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Kil H. Kwon, B. H. Yoo, and G. J. Yoon, A note on Magnus' conjecture, Intern. Math. Journal, 3, 2003, 143-156.
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Kil H. Kwon and D. W. Lee, Orthogonal functions satisfying a second order differential equation, J. Comput. Appl. Math. 153, 2003, 283-293.
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Kil H. Kwon, S. B. Damelin, and H. S. Jung, Mean Convergence of extended Lagrange interpolation for exponential weights, Acta. Appl. Math., 76, 2003, 17-36.
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Kil H. Kwon and D. W. Lee, Characterizations of Bochner-Krall orthogonal polynomials of Jacobi type, Constr. Approx. 19, 2003, 599-619.
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Kil H. Kwon, D. H. Kim, F. Marcellan, and G. J. Yoon, Zeros of Jacobi-Sobolev orthogonal polynomials, Inter. Math. J. 4, 2003, 413-422.
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Kil H. Kwon and D. W. Lee, Tchebycheff polynomials on the disk, J. Comput. Appl. Math., 162, 2004, 359-363.
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Kil H. Kwon and D. W. Lee, Inequalities of Rafalson type for algebraic polynomials, J. Approx. Th. 128, 2004, 175-186.
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Kil H. Kwon, M. I. Bueno, and F. Marcellan, Discrete-continuous symmetric Sobolev inner products, Acta Appl. Math. 82, 2004, 309-331.
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Kil H. Kwon, L. L. Littlejohn, and G. J. Yoon, Construction of differential operators having Bochner-Krall orthogonal polynomials as eigenfunctions, J. Math. Anal. Appl., 324, Dec. 2006, 285-303.
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Y. M. Hong, J. M. Kim, and Kil H. Kwon, Sampling Theory In Abstract Reproducing Kernel Hilbert Space, Sampling Theory in Signal and Image Processing, 6(1), Jan. 2007, 109-121.
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J. M. Kim and Kil H. Kwon, Recovery of finite missing samples in two-channel oversampling, Sampling Theory in Signal and Image Processing, 6(2), May 2007, 185-198.
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W. N. Everitt, K. H. Kwon, L. L. Littlejohn, R. Wellman, and G. J. Yoon, Jacobi-Stirling numbers, Jacobi polynomials, and the left-definite analysis of the classical Jacobi differential expression, J. Comput. Appl. Math. 208, 2007, 29-56.
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Y. M. Hong, J. M. Kim, Kil H. Kwon, and E. H. Lee, Channeled sampling in shift invariant spaces, Intern. J Wavelets, Multi resolution and Inform. Processing, 5(5), 2007, 753-767.
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A. G. Garcia, J. M. Kim, K. H. Kwon and G. Perez-Villalon, Aliasing error of sampling series in wavelet subspaces, Numerical Functional Analysis and Optimization, 29, Jan. 2008, 126-144.
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J. M. Kim and K. H. Kwon, Sampling expansion in shift invariant spaces, Intern. J Wavelets, Multi resolution and Inform. Processing, 6(2), March 2008, 223-248.
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J. M. Kim and K. H. Kwon, Vector sampling expansion in Riesz bases setting and its aliasing error, Applied Computational Harmonic Analysis, 25(3), Nov. 2008, 315-334.
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K. H. Kwon, L. L. Littlejohn, and G. J. Yoon, Ghost matrices and a characterization of symmetric Sobolev bilinear forms, Linear Algebra and its Applications, 431, July 2009, 104-119.
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S. Kang, J. M. Kim and K. H. Kwon, Asymmetric multi channel sampling in shift invariant spaces, J. Math. Anal. Appl., 367, Feb. 2010, 20-28.
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K. H. Kwon and Jaekyu Lee, Irregular sampling on shift invariant spaces, IEICE Transactions on Fundamentals on Electronics, Vol. E93-A, No. 6, June 2010, 1163-1170.