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2. (2) D. Tanaka, T. Miki, and M. Miki : “Study on improvement of calculation method of lightning outages rate of transmission lines (Part 2)—Gap length dependence of concurrent flashover characteristics of two parallel arcing horns—”, CRIEPI Report, No. 13008 (2014) (in Japanese)
3. (3) D. Tanaka, T. Shindo, T. Miki, and M. Miki : “Probability of Concurrent Flashover in a Parallel Gap Configuration”, IEEJ Trans. PE, Vol. 135, No. 11, pp. 669-674 (2015)