1. P. Souvatzis, The UQUANTCHEM software can be obtained free of charge from the address listed here: URL http://www.anst.uu.se/pesou087/DOWNLOAD-UQUANTCHEM/DOWNLOAD-UQUANTCHEM/DOWNLOAD-SITE-UQUANTCHEM.html.
2. Modern Quantum Chemistry;Szabo,1996
3. Handbook of Computational Quantum Chemistry,2005
4. The Linear Algebra Package (LAPACK) can be obtained free of charge from the address listed here: URL http://www.netlib.org/lapack.
5. The Basic Linear Algebra Subprograms (BLAS) can be obtained free of charge from the address listed here: URL http://www.netlib.org/blas.