Yang, Zhi, Zhaohui Li, Minghan Xu, Yujie Ma, Jing Zhang, Yanjie Su, Feng Gao, Hao Wei, and Liying Zhang. 2013. “Controllable Synthesis of Fluorescent Carbon Dots and Their Detection Application As Nanoprobes”. Nano-Micro Letters 5 (4):247-59. https://doi.org/10.1007/BF03353756.