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- [3] The photo-electric densitometer AMERICAN JOURNAL OF ROENTGENOLOGY AND RADIUM THERAPY, 1938, 40 : 610 - 615
- [5] Photo-electric illumination measurement ZEITSCHRIFT DES VEREINES DEUTSCHER INGENIEURE, 1933, 77 : 1220 - 1220
- [6] PHOTO-ELECTRIC EFFECTS IN SPINEL BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1979, 24 (03): : 449 - 449
- [7] Photo-electric angle converter SELECTED PAPERS FROM THE INTERNATIONAL CONFERENCE ON OPTOELECTRONIC INFORMATION TECHNOLOGIES, 2000, 4425 : 452 - 459