K. Kajsanthia and  J. Wittayakun and  S. Prayoonpokarach,  An Optical Sensing Film for Fe(III)
Determination Based on 1,1′- diethyl 2,2′-
cyanine Iodide Immobilized in Nafion Film.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2012, vol. 67(7). 562 - 565
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/16028.