1. J.-I. Yamada, H. Akutsu, H. Nishikawa, and K. Kikuchi, Chem. Rev., 2004, 104, 5057.
2. O. A. D’yachenko, A. A. Bardin, A. I. Kotov, G. V. Shilov, V. V. Gritsenko, L. I. Buravov, and M. Mizuno, Izv. Akad. Nauk, Ser. Khim., 2003, 359 [Russ. Chem. Bull., Int. Ed., 2003, 52, 375].
3. A. A. Bardin, A. I. Kotov, G. V. Shilov, and L. I. Buravov, Kristallografiya, 2005, 50, 985 [Crystallogr. Repts, 2005, 50 (Engl. Transl.)].
4. T. Ishiguro, K. Yamaji, and G. Saito, Organic Superconductors, Springer-Verlag, Heidelberg, 1998, 522.
5. T. Mori, Bull. Chem. Soc. Jpn, 1998, 71, 2509.