References:

1. Noncovalent forces in proteins by Barbara A . Heller and Yvonne M. Gindi. University of Nebraska at Kearney.
2.  Structural Studies of Phycobiliproteins from Spirulina:Combining Spectroscopy, Thermodynamics, and Molecular Modeling in an Undergraduate Biochemistry Experiment  by Ann T. S. Taylor* and Scott E. Feller; Vol. 79  No. 12  December 2002  •  Journal of Chemical Education.
3. A biochemical study of noncovalent forces in protein using phycocyanin from Spirulina;   Heller BA, Gindt YM (2000);J Chem Ed 77:1458-1459.

Webliography:

1. http://www.pnas.org/content/100/9/5142.full
2. http://www.authorstream.com/Presentation/aSGuest112775-1176242-uv-specroscopy/
3. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC154312/