1. J. M. Williams, J. R. Ferrano, R. J. Thorn, K. D. Carlson, U. Geiser, H. H. Wang, A. M. Kini, M.-H. Whangbo, Organic Superconductors (Including Fullerenes). Synthesis, Structure, Properties, and Theory, Prentice Hall, Englewood Cliffs, New Jersey, 1992, 400.
2. G. Saito, Yu. Yoshida, Bull. Chem. Soc. Jpn, 2007, 80, 1.
3. C. Coulon, R. Clerac, Chem. Rev., 2004, 104, 5655.
4. M. Fourmigue, P. Batail, Chem.Rev., 2004, 104, 5379.
5. A. M. Flakina, A. N. Chekhlov, R. N. Luybovskaya, J. Phys. IY Fr., 2004, 114, 501.