Lee, Y.R. et al. 2016. Isomer Separation of trans-Astaxanthin, 9-cis-Astaxanthin and 13-cis-Astaxanthin by Ligand Exchange Chromatography. Asian Journal of Chemistry. 28, 6 (Feb. 2016), 1185–1190. DOI:https://doi.org/10.14233/ajchem.2016.19547.