Mobility and conductivity of ionic and bonded defects in hydrogen-bonded chains with nonlinear interactionsA. S. Tchakoutio Nguetcho, P. B. Ndjoko and T. C. KofaneEur. Phys. J. B, 62 1 (2008) 7-14DOI: https://doi.org/10.1140/epjb/e2008-00110-5