1. Genesis and development of a scientific fact;Fleck,1935
2. Die Stellung der Regeltheorie im System der Wissenschaft;Schaefer,1956
3. Historical aspects of the aetiology of rheumatoid arthritis;Bywaters;Br J Rheumatol,1988
4. Focal infection revisited;Hughes;Br J Rheumatol,1994
5. Immunochemistry;Arrhenius,1907