[Wien] the integration of product of 3 spherical harmonics (Gaunt coefficients)

[fatemeh.mirjani]

Dear Users;

Would you mind please guiding me to calculate the integration of product of 3 spherical harmonics (Gaunt coefficients)?
I found in SRC_lapw1/atpar.F gaunt coefficients but no subroutine. but I need the subroutine of calculation of this integral.Is there anyone that has this subroutine?

Any help is appreciated.

-- 
Best Regards
Fatemeh Mirjani
Computational Condensed Matter Research Lab.
Affiliated ICTP Center,
Physics Department, Isfahan University of Technology, Iran
Email: f_mirjani at ph.iut.ac.ir 
Tel/Fax Office: +98311-3913746
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