Attached is information on obtaining a copy of my smooth curve fit/interpolation in two or more dimensions paper
(NASA TM103679) from the NASA Technical Reports Server
(NTRS) at http://ntrs.nasa.gov/search.jsp.
The method is better than the methods in "Numerical Recipes in Fortran" by Press, Teukolsky, Vetterling, and Flannery ( pp 116-122).

Dear Jeffrey,

Thanks for the reference. The subject of interpolation of scattered data is now treated in the 3rd edition of Numerical Recipes.

Saul Teukolsky