1. (1) V. A. Rakov and M. A. Uman: Lightning Physics and Effects 8. Winter lightning in Japan, p. 308, Cambridge University Press (2003)
2. (2) Working Group on Lightning Protection for Transmission System: “Lightning Observation on Japan Sea Coast in Winter”, CRIEPI Report, No. T10 (1989)
3. (3) K. Miyake: “Development of Measuring System on Lightning Discharge and Explication for Characteristics of Winter Lightning”, CRIEPI Report, No. T36 (1994)
4. (4) T. Takeuchi, et al.: J. Meteorol. Soc. Japan, Vol. 54, pp. 436-440 (1983)
5. (5) H. Taniguchi, H. Sugimoto, and S. Yokoyama: “Observation of lightning Performance on Power Distribution Line by Still Cameras”, T. IEE Japan, Vol. 116-B, pp. 1138-1143 (1996)