A. Mirzaei, K. Janghorban, B. Hashemi, M. Bonyani, S. G. Leonardi, and G. Neri, “Characterization and optical studies of PVP-capped silver nanoparticles”, J. Nanostruct. Chem., vol. 7, no. 1 (March 2017), Nov. 2016, doi: 10.1007/s40097-016-0212-3.