van den Berg, Lodewijk. "Variations in the Spectral Distribution of Photoconductivity of Cadmium Sulfide Crystals as a Function of the Crystal Growth Conditions.", 1975

van den Berg, Lodewijk. "Variations in the Spectral Distribution of Photoconductivity of Cadmium Sulfide Crystals as a Function of the Crystal Growth Conditions.", 1975, Box: 18, Folder: F51. Karl Wolfgang Böer papers, MSS 0483. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/88780 Accessed July 26, 2024.