Summary
Ole Christensen, H. O. Kim, R. Y. Kim and J. K. Lim (2005) Perturbation of frame sequences in shift-invariant spaces. J. Geom. Anal., 15(2):181–192. 
Bibtex entry
@ARTICLE { MR2152478,
AUTHOR = { Ole Christensen and H. O. Kim and R. Y. Kim and J. K. Lim },
TITLE = { Perturbation of frame sequences in shift-invariant spaces },
JOURNAL = { J. Geom. Anal. },
FJOURNAL = { The Journal of Geometric Analysis },
VOLUME = { 15 },
YEAR = { 2005 },
NUMBER = { 2 },
PAGES = { 181--192 },
ISSN = { 1050-6926 },
MRCLASS = { 42C15 (42C40) },
MRNUMBER = { 2152478 (2006c:42029) },
MRREVIEWER = { Patrick J. Oonincx },
DOI = { 10.1007/BF02922191 },
URL = { http://dx.doi.org/10.1007/BF02922191 },
}