5. Acknowledgements

As with all scientific progress, we stand on the shoulders of giants. If this package is of use to you in publishing papers then please acknowledge the following people who have made this package a reality:

• A. Barbieri and M.A. Van Hove - who developed most of the original fortran code. Use A. Barbieri and M.A. Van Hove, private communication. (see doc/phsh2007.txt for further details).

• E.L. Shirley - who developed part of the fortran code during work towards his PhD thesis (refer to the thesis: E.L. Shirley, “Quasiparticle calculations in atoms and many-body core-valence partitioning”, University of Illinois, Urbana, 1991).

• Christoph Gohlke - who developed the elements.py module used extensively throughout for the modelling convenience functions (see ‘elements.py’ for license details).

I would also be grateful if you acknowledge this python package (phaseshifts) as: L.M. Deacon, private communication.

5.1. Thanks

I wish to personally add a heartfelt thanks to both Eric Shirley and Michel Van Hove who have kindly allowed the use of their code in the libphsh.f file needed for the underlying low-level functions in this package.