Biosynthesis of Silver and Gold Crystals Using Grapefruit ExtractLong Chen, Jianli Wang, Hongfeng Wang, Zhaopeng Qi, Yuchuan Zheng, Junbo Wang, Le Pan, Guanru Chang and Yongmei YangMATEC Web Conf., 67 (2016) 02016DOI: https://doi.org/10.1051/matecconf/20166702016