Fridkin, V. (1966). Photoelectrets and the electrophotographic process. Van Nostrand.
Lua i Stíl Chicago (17ú heag.)Fridkin, V.M. Photoelectrets and the Electrophotographic Process. Princeton, New Jersey: Van Nostrand, 1966.
Lua MLA (9ú heag.)Fridkin, V.M. Photoelectrets and the Electrophotographic Process. Van Nostrand, 1966.
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