On combining Laplacian and optimization-based mesh smoothing techniques
Lori A. Freitag
Proc. Symp. Trends in Unstructured Mesh Generation, Amer. Soc. Mechanical Engineers, Jun 1997, pp. 37–43
ftp://info.mcs.anl.gov/pub/tech_reports/plassman/lori_combined.ps.Z
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