1. Broy, M. (2002). Software engineering—from auxiliary to key technologies. In M. Broy & E. Dener (Eds.), Software pioneers (pp. 10–13). Heidelberg: Springer.
2. Dod, J. (1999). Effective substances. In The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999.
3. Geddes, K. O., Czapor, S. R., & Labahn, G. (1992). Algorithms for computer algebra. Boston: Kluwer.
4. Hamburger, C. (1995). Quasimonotonicity, regularity and duality for nonlinear systems of partial differential equations. Annali di Matematica Pura ed Applicata, 169, 321–354.
5. Slifka, M. K., & Whitton, J. L. (2000). Clinical implications of dysregulated cytokine production. Journal of Molecular Medicine. https://doi.org/10.1007/s001090000086.