1. V.V. Brazhkin, J. Phys.: Condens. Matter 18, 9643 (2006)
2. I.L. Knunyants, in Encyclopaedic Dictionary in Chemistry (Ed. M. Acad., Soviet Encyclopedia, 1983) p. 792
3. S. Glasstone, Theoretical Chemistry (Boston College, New York, 1948) p. 632
4. “Benzene”, in Encyclopaedic Dictionary of Brockhaus and Efron (Leipzig and St. Petersburg Publishers, Saint Petersburg, 1890--1907) (in Russian)
5. L. Ciabini, F.A. Gorelli, M. Santoro, R. Bini, V. Schettino, M. Mezouar, Phys. Rev. B 72, 094108 (2005)