The order of compiliation

The paper most likely gives the order of compilation due to the interdependence of modules contained within the Fortran source files.  In other words, common_par.f90 uses a module provided by nrtype.f90 (possibly, not necessarily, but we'll assume that for now), so nrtype.f90 must be compiled first to generate the module file that common_par.f90 relies on.  Simply Fortran, however, automatically sorts out compilation order based on these module dependencies.  I would suggest adding all the files listed into a project and attempting to build it as-is.  It theoretically should "just work." This automatic calculation of compilation order is one of the first and most important features of Simply Fortran.

If it doesn't work, post back here, and we can walk through the steps of creating a makefile by hand.