Chen, Z., Lee, T., Lenzer, T., & Oum, K. (2006). Solvent Effects on the S0(11Ag-) S2(11Bu+) Transition of β-Carotene, Echinenone, Canthaxanthin, and Astaxanthin in Supercritical CO2 and CF3H. Journal of Physical Chemistry A, 110(39), 11291-11297. Retrieved from http://pubs.acs.org/cgi-bin/article.cgi/jpcafh/2006/110/i39/html/jp0643247.html.