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Self-adjoint operators generated from non-Lagrangian symmetric differential equations having orthogonal polynomial eigenfunctions Everitt, WN; Kwon, Kil Hyun; Lee, JK; Littlejohn, LL; Williams, SC, ROCKY MOUNTAIN JOURNAL OF MATHEMATICS, v.31, no.3, pp.899 - 937, 2001 |
Sobolev orthogonal polynomials and second-order differential equations Kwon, Kil Hyun; Littlejohn, LL, ROCKY MOUNTAIN JOURNAL OF MATHEMATICS, v.28, no.2, pp.547 - 594, 1998 |
Zeros of orthogonal polynomials in certain discrete Sobolev spaces Han, SS; Kwon, Kil Hyun; Littlejohn, LL, JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, v.67, no.2, pp.309 - 325, 1996-03 |
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