Hoang, T. T. H. et al. (2019) “Study of the Synthesis Silver Nanoparticles and the Particle Size Effect on Surface-Enhanced Raman Scattering Spectroscopy of Methylene Blue”, Old Journal, (137), pp. 74–79. Available at: https://jst.vn/index.php/old/article/view/612 (Accessed: 2 August 2025).