Photoelectrets and the electrophotographic process. (Fotoėlektrety i ėlektrofotograficheski prot︠s︡ess) / 
Fridkin, Vladimir Mikhailovich.
Zheludev, Ivan S.
Princeton, N.J.; London, 
1966.
Joint authors: Vladimir Mikhailovich Fridkin and Ivan S. Zheludev.