Kragh, H. (1998). Spinthariscope. I R. Bud, S. Johnston & D. Warner (red.), Instruments of Science: A Historical Encyclopedia (s. 572-573). Garland Science.
Kragh, H. (1998). Scintillation counter. I R. Bud, S. Johnston & D. Warner (red.), Instruments of Science: A Historical Encyclopedia (s. 525-526). Garland Science.
Kragh, H. (1997). Electron atoms before and after Thomson. I J. Vandersmissen (red.), Book of Abstracts, Symposia: 20th International Congress of History of Science (s. 87). University of Liege.
Kragh, H. (1997). The take-off phase of Danish chemical industry, 1910-1940. I A. S. Travis, H. G. Schröter & E. Homburg (red.), Determinants in the Evolution of the European Chemical Industry, 1900-1939: New Technologies, Political Frameworks, Markets, and Companies (s. 321-339). Kluwer Academic Publishers.