Smooth (C∞) but Nowhere Analytic Functions. - Sung S. Kim; Kil H. Kwon (Am. Math. Mon., 2000)

Convergence of Hermite and Hermite-Fejér Interpolation of Higher Order for Freud Weights. - Steven B. Damelin; H. S. Jung; Kil H. Kwon (J. Approx. Theory, 2001)

Orthogonal Polynomial Solutions of Spectral Type Differential Equations: Magnus' Conjecture. - Kil H. Kwon; Lance L. Littlejohn; Gang J. Yoon (J. Approx. Theory, 2001)