T. Imai, F. Sawa, T. Nakano, T. Ozaki, T. Shimizu, M. Kozako, T. Tanaka, "Effects
of Nano- and Micro-filler Mixture on Electrical Insulation Properties of Epoxy Based
Composites," IEEE Trans. Dielectr. Electr. Insul., vol. 13, no. 1, pp. 319-326, 2006.
