1. Editorial

   • Harry L. Tuller

   Editorial Introduction Pages: 75 - 75

2. Aging of NTC Ceramics in the System Mn-Ni-Fe-O

   • W.A. Groen
   • C. Metzmacher
   • S. Schuurman

   OriginalPaper Pages: 77 - 87

3. Fractal Approach to ac Impedance Spectroscopy Studies of Ceramic Materials

   • Goran Branković
   • Zorica Branković
   • José Arana Varela

   OriginalPaper Pages: 89 - 94

4. The Effect of the Oxygen Exchange at Electrodes on the High-Voltage Electrocoloration of Fe-Doped SrTiO₃ Single Crystals: A Combined SIMS and Microelectrode Impedance Study

   • S. Rodewald
   • N. Sakai
   • J. Maier

   OriginalPaper Pages: 95 - 105

5. Mixed Electronic-Ionic Conduction in Ru-Doped SrTiO₃ at High Temperature

   • Hiroshige Matsumoto
   • Daisuke Murakami
   • Hiroyasu Iwahara

   OriginalPaper Pages: 107 - 111

6. The Electrical and Defect Properties of Bi₃Zn₂Sb₃O₁₄ Pyrochlore: A Grain-Boundary Phase in ZnO-Based Varistors

   • Jane Clayton
   • Hitoshi Takamura
   • Bernhardt J. Wuensch

   OriginalPaper Pages: 113 - 120

7. Structural, Electrical and Dielectric Behavior of Pb(Mg_1/4 Ni_1/4 W_1/2)O₃ Ceramics

   • Shashi K. Sinha
   • S.N. Choudhary
   • R.N.P. Choudhary

   OriginalPaper Pages: 121 - 126

8. Synthesis and Dielectric Characterization of Pyrochlore-Free Pb_1−x Ba _x (Zn_1/3Nb_2/3)O₃ Ceramics

   • X.J. Lu
   • X.M. Chen

   OriginalPaper Pages: 127 - 131