J. R. MacCallum and C. A. Vincent, Polymer electrolyte reviews vol. 2:
 T. Springer, T. Zawodzinski, M. Wilson, and S. Gottesfeld,
"Characterization of polymer electrolyte fuel cells using AC impedance
spectroscopy," Journal of The Electrochemical Society, vol. 143, pp.
 J. R. Macdonald, "Impedance spectroscopy and its use in analyzing the
steady-state AC response of solid and liquid electrolytes," Journal of
electroanalytical chemistry and interfacial electrochemistry, vol. 223, pp.
 J. T. S. Irvine, D. C. Sinclair, and A. R. West, "Electroceramics:
characterization by impedance spectroscopy," Advanced Materials, vol.
2, pp. 132-138, 1990.
 X. Qian, N. Gu, Z. Cheng, X. Yang, E. Wang, and S. Dong, "Impedance
study of (PEO)10LiClO4–Al2O3 composite polymer electrolyte with blocking
electrodes," Electrochimica acta, vol. 46, pp. 1829-1836, 2001.
 L. Nyikos and T. Pajkossy, "Fractal dimension and fractional power
frequency-dependent impedance of blocking electrodes," Electrochimica
acta, vol. 30, pp. 1533-1540, 1985.
 R. Armstrong and R. Burnham, "The effect of roughness on the
impedance of the interface between a solid electrolyte and a blocking
electrode," Journal of Electroanalytical Chemistry and Interfacial
Electrochemistry, vol. 72, pp. 257-266, 1976.
 A. Sharma and M. N. Afsar, "Accurate permittivity and permeability
measurement of composite broadband absorbers at microwave
frequencies," in Instrumentation and Measurement Technology
Conference (I2MTC), 2011 IEEE, 2011, pp. 1-6.
 A. Sharma and M. N. Afsar, "Microwave complex permeability and
permittivity of nanoferrites," Journal of Applied Physics, vol. 109, pp.