In pursuit of negative Fukui functions: Molecules with very small band gaps
Echegaray, Eleonora; Rabi, Sandra; Cárdenas, Carlos; Zadeh, Farnaz Heidar; Rabi, Nataly; Lee, Sungmin; Anderson, James S.; Toro Labbé, Alejandro; Ayers, Paul W. (Springer Verlag, 2014)