Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy
Reference4 articles.
1. Frank I. M.: Usp. Fiz. Nauk75 (1961) 231.
2. Lester L. DeRaad, Jr., Wu-yang Tsai: Phys. Rev. D18 (1978) 2152.
3. Schwinger J.: Particles, Sources, and Fields, Vol. 1. Addison-Wesley, Reading (Mass.), 1970.
4. Chu A. N. et al.: J. Appl. Phys.51 (1980) 1290.