1. N.F. Mott, Metal-Insulator Transitions, 2nd edn. (Taylor & Francis, London, 1990)
2. H. Böttger, V.V. Byksin, Hopping Conduction in Solids (Akademie Verlag, Berlin, 1985)
3. J.C. Bredas, G.B. Street, Acc. Chem. Res. 18, 309 (1985)
4. S. Roth, H. Bleier, Adv. Phys. 36, 385 (1987)
5. R. Menon, C.O. Yoon, D. Moses, A.J. Heeger, Metal-insulator transition in doped conducting polymers, in Handbook of Conducting Polymers, edited by T.A. Skotheim (CRC Press, 2007)