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 REFREALAZIHTI -  REAL AZImuthal REFL/transm coeff for HTI media 	

 refRealAziHTI  [optional parameters]	>coeff.data 			

 Optional parameters: 							
 vp1=2         p-wave velocity medium 1 (with respect to symm.axes)	
 vs1=1         s-wave velocity medium 1 (with respect to symm.axes)	
 eps1=0        epsilon medium1						
 delta1=0	delta medium 1						
 gamma1=0	gamma medium 1						
 rho1=2.7	density medium 1 					
 vp2=2         p-wave velocity medium 2 (with respect to symm.axes)	
 vs2=1         s-wave velocity medium 2 (with respect to symm.axes)	
 eps2=0        epsilon medium 2					
 delta2=0	delta medium 2						
 gamma2=0	gamma medium 2						
 rho2=2.7	density medium 2 					
 modei=0 	incident mode is qP					
		=1 incident mode is qSV					
		=2 incident mode is SP					
 modet=0 	scattered mode						
 rort=1 	reflection(1)	or transmission (0)			
 azimuth=0	azimuth with respect to x1-axis (clockwise)		
 fangle=0	first incidence angle					
 langle=45	last incidence angle					
 dangle=1	angle increment						
 iscale=0      default: angle in degrees				
		=1 angle-axis in rad                                    
               =2 axis  horizontal slowness                            
               =3 sin^2 of incidence angle                             
 ibin=1 	binary output 						
		=0 Ascci output						
 outparfile	=outpar parameter file for plotting			
 coeffile	=coeff.data coefficient-output file			
 test=1 	activate testing routines in code			
 info=0 	output intermediate results				

 Notes:								
 Axes of symmetry have to coincide in both media.  This code computes	
 all 6 REAL reflection/transmissions coefficients on the fly. However,	
 the set-up is such Real reflection/transmission coefficients in 	
 HTI-media with coinciding symmetry axes.				
 However, the set-up is such that currently only one coefficient is	
 dumped into the output. This is easily changed.  The solution of the	
 scattering problem is obtained numerically and involves the Gaussian	
 elimination of a 6X6 matrix.						", 



 Author:: Andreas Rueger, Colorado School of Mines, 02/10/95
                original name of code <graebnerTIH.c>
           modified, extended version of this code <refTIH3D>
 
  Technical references:

 	Sebastian Geoltrain: Asymptotic solutions to direct
		and inverse scattering in anisotropic elastic media;
		CWP 082.
	Graebner, M.; Geophysics, Vol 57, No 11:
		Plane-wave reflection and transmission coefficients
		for a transversely isotropic solid.
	Cerveny, V., 1972, Seismic rays and ray intensities in inhomogeneous 	
		anisotropic media: Geophys. J. R. astr. Soc., 29, 1-13.

	.. and some derivations by Andreas Rueger.

 If propagation is perpendicular or 
 parallel to the symmetry axis, the solution is analytic (see 		
 graebner2D.c and rtRealIso.c