Program sfriesz | Compute 2-D Riesz transform. 
[SYNOPSIS]
sfriesz < in.rsf > out.rsf order=10 ref=1.
[PARAMETERS]
int     | order | =10 |   | 	Hilbert transformer order 
float   | ref | =1. |   | 	Hilbert transformer reference (0.5 < ref <= 1) 
[DIRECTORY]
user/fomels
