@article{Kwon:2006:CDO,
author = {Kwon, K. H. and Littlejohn, L. L. and Yoon, G. J.},
title = {Construction of differential operators having
{B}ochner-{K}rall orthogonal polynomials as eigenfunctions},
journal = {J. Math. Anal. Appl.},
fjournal = {Journal of Mathematical Analysis and Applications},
volume = {324},
year = {2006},
number = {1},
pages = {285–303},
issn = {0022-247X},
coden = {JMANAK},
mrclass = {33C45 (34L10 47E05)},
mrnumber = {MR2262472},
doi = {10.1016/j.jmaa.2005.11.059},
zblno = {1121.34016}}