VALIZADEH, M., A. KAZEMZADEH, M. RAISIAN, and A. MOHAMMADIZADEH. 2010. “Development of Sol-Gel Process for Synthesis of Single-Walled Carbon Nanotubes”. Asian Journal of Chemistry 19 (2):1246-50. https://asianpubs.org/index.php/ajchem/article/view/20227.