1. Science of Ball Lightning (Fire Ball) (ed. Ohtsuki, Y. H.) (World Scientific, Singapore, 1989).
2. Barry, J. D. J. atmos. terr. Phys. 30, 313–317 (1968).
3. Ofuruton, H. & Ohtsuki, Y. H. Nuovo Cim. 13C, 761–768 (1990).
4. Kapitza, P. L. Dokl. Akad. Nauk. SSSR 101, 245–248 (1955).
5. Babat, G. I. J. Inst. electr. Eng. 94, Part 3, 27–37 (1947).