1. Handbook of Biological Dyes and Stains
2. Sekima , H. Method for manufacture of granular rhodamine dyes
3. Xiao , G. Zhu , D. Bulk-scale preparation of ethyl 2-[3,6-bis(N-ethylamino)-2,7-dimethyl-3-hydroxanth-9-yl]benzoate hydrochloride
4. Aburada , K. Akagi , M. Process for the preparation of rhodamines
5. Fluorescence quantum yields of some rhodamine dyes;Kubin;J. Luminesc.,1983