Mrqmin Program I Want To Write A Program About Nonlinear Two Dimensional Fitting By Using Fortran I Need File Of This Program?

I want to write a program about nonlinear two dimensional fitting by using fortran i need file of this program? - mrqmin program

I want to write two-dimensional non-linear editing with fortran.i need this program or a file as IT.Can to help you. I really need to it.thanks alot.do mrqmin has no example of the method?