1. C60: Buckminsterfulleren, die Himmelssphäre, die zur Erde fiel
2. C60: Buckminsterfullerene, The Celestial Sphere that Fell to Earth
3. , , The Literature of Analytical Chemistry: A Scientometric Evaluation, CRC Press, Boca Raton, FL, USA, 1987.
4. Generalization of Epidemic Theory: An Application to the Transmission of Ideas
5. Stability of Epidemic Processes