1. V. Amendola, R. Pilot, M. Frasconi, O. M. Marago, and M. A. Iati, J. Phys.: Condens. Matter 29, 203002 (2017).
2. G. Lin, Q. Zhang, X. Lin, D. Zhao, R. Jia, N. Gao, Z. Zuo, X. Xu, and D. Liu, RSC Adv. 60, 48275 (2015).
3. R. M. Charatan and R. S. Williams, J. Appl. Phys. 72, 5226 (1992).
4. Gold Nanoclusters for Physics, Chemistry and Biology, Ed. by C. Louis and O. Pluchery, 2nd ed. (World Scientific, Singapore, 2017).
5. V. L. Berkovits, A. B. Gordeeva, T. V. Lvova, and V. P. Ulin, Semiconductors 46, 1432 (2012).