1. Drozdov, A. P., Eremets, M. I., Troyan, I. A., Ksenofontov, V. & Shylin, S. I. Conventional superconductivity at 203 Kelvin at high pressures in the sulfur hydride system. Nature 525, 73–76 (2015).
2. Guseva M. Babaev V, Novikov N, inventors; Tetracarbon, United States Patent 6,355,350 B, 1996 Jan 18.
3. Guseva M. Babaev V, Novikov N, inventors; Tetracarbon, United States Patent 6,454,797 B, 2002 Sept 24.
4. Guseva M. Babaev V, Novikov N, inventors; Tetracarbon, United States Patent 6,555,224 B, 2003 Apr 29.
5. Tang, Z. K. et al. Superconductivity in 4 Angstrom Single-Walled Carbon Nanotubes. Science 292, 2462–2465 (2001).