1. V. S. Bakunov, “Analysing the structure of ceramics” [in Russian], Neorganicheskie Materialy, 32(2), 243 – 248 (1996). V. S. Bakunov, “Analysing the structure of ceramics,” Inorg. Mater., 32, No. 2, 220 – 222 (1996).
2. N. Yuca, N. Karatepe, F. Yakuphanoglu, et al., “Thermal and electrical properties of carbon nanotubes purified by acid digestion,” International Scholarly and Scientific Research & Innovation, 5(7), 484 – 489 (2011).
3. R. C. Haddon, J. Sippel, A. G. Rinzler, et. al., “Purification and separation of carbon nanotubes,” MRS Bulletin, 29(4), 252 – 259 (2004).
4. J. Park, S. Banerjee, T. Hemraj, et al., “Purification strategies and purity visualization techniques for single-walled carbon nanotubes,” J. Mater. Chem., 16(2), 141 – 154 (2006).
5. P. X. Hou, C. Liu, and H. M. Cheng, “Purification of carbon nanotubes” Carbon, 46(15), 2003 – 2025 (2008).