Phu, Phung Kim, et al. “KxNiy[Fe(CN)6].xH2O/Prussian/Blue/Analogue:/A/Study/of/Size/Effect/on/the/Structural,/Optical/and/Magnetic/Propertiecs”. Communications in Physics, vol. 18, no. 1, July 2008, pp. 43-47, doi:10.15625/0868-3166/18/1/10689.