Grynkiewicz, G.; Poenie, M. & Tsien, R.Y. (1985). "A new generation of Ca2+ indicators with greatly improved fluorescence properties*" (PDF). J. Biol. Chem. 260 (6): 3440–3450. doi:10.1016/S0021-9258(19)83641-4. PMID 3838314. http://tsienlab.ucsd.edu/Publications/Grynkiewicz%201985%20JBC%20-%20New%20Generation%20Ca2+%20Indicators.pdf
Cannell, MB; Berlin, JR; Lederer, WJ (1987). "Intracellular calcium in cardiac myocytes: calcium transients measured using fluorescence imaging". Society of General Physiologists Series. 42: 201–14. PMID 3505361. /wiki/PMID_(identifier)
Tsien, Roger Y.; Miyawaki, Atsushi; Llopis, Juan; Heim, Roger; McCaffery, J. Michael; Adams, Joseph A.; Ikura, Mitsuhiko (1997). "Fluorescent indicators for Ca2+based on green fluorescent proteins and calmodulin". Nature. 388 (6645): 882–7. Bibcode:1997Natur.388..882M. doi:10.1038/42264. PMID 9278050. S2CID 13745050. https://doi.org/10.1038%2F42264