Robuta

https://digitalcommons.rockefeller.edu/ru-authors/176/ "Zworykin, V. Photocells and their application" by The Rockefeller University V. K. Zworykin, E. D Wilson. Photocells and their application The book presents a historical overview of the work of the early experiments by Hertz, Hallwachs,... by thevphotocellsapplicationrockefeller