1. Preparation, electrical conductivity and tetragonal distortion of some manganite-systems;Rosenberg;J. Phys. Chem. Solids,1963
2. Preparation, semiconduction and low temperature magnetization of the system Ni1−xMN2+xO4;Larson;J. Phys. Chem. Solids,1962
3. Preparation of semiconducting ceramics (NTC thermistors) by Chemical Method;Jabry;J. Phys. (Paris), Colloque,1986
4. Low electrical resistivity NTC thermistors with long term stability;Rousset,1987
5. Chemical preparation of NTC thermistors with low resistivity and high stability;Caffin,1987