1. (1) Lightning Protection for Electrical and Electronic Equipment, 1st ed, The Institute of Electrical Installation Engineers of Japan (2011)
2. (2) IEC 62305-1-4: “Protection against lightning—Part 1: General principles”, Ed 2 (2010)
3. (3) S. Yasui, H. Takayama, S. Nishizawa, T. Matsumoto, and K. Kato: “The relations between lightning protection zone concept and external lightning protection system of structure”, J. IEIE Jpn., Vol. 32, No. 12, pp. 43-46 (2012)
4. (4) JIS T 1022: 2006 Safety requirements of electrical installation for medically used rooms in hospitals and clinics, p. 512 (2006)
5. (5) S. Miyazaki and M. Ishii: “Numerical electromagnetic analysis on current distribution in building directly hit by lightning”, IEEJ Trans. PE, Vol. 125, No. 12, pp. 1231-1236 (2005) (in Japanese)