Electron-proton couplings and local susceptibilities in TTF and TCNQ salts F. Devreux, Cl. Jeandey, M. Nechtschein, J.M. Fabre et L. Giral J. Phys. France, 40 7 (1979) 671-677 DOI: 10.1051/jphys:01979004007067100