1. Chakravarthy S., Mishra D.; An Event Specification Language (Snoop) For Active Databases and its Detection; Technical Report September 91.
2. Dayal U., Blaustein B., Buchmann A., Chakravarthy U., Hsu M., Ladin R., McCarthy D., Rosenthal A., Satin S., Carey M.J., Livny M., Jauhari R.; The HiPAC Project: Combining Active Databases and Timing Constraints; ACM Sigmod Record, 17(1), March 88.
3. Dayal U., Buchmann A. P., McCarthy D.R.; Rules Are Objects Too: A Knowledge Model For An Active, Object-Oriented Database System; Dittrich K. R.(ed.); Proc. 2nd Intl. Workshop on Object-Oriented Database Systems, LNCS 334, Springer 88.
4. Diaz O., Patom N., Gray P.; Rule Management in Object-Oriented Databases: A Uniform Approach; Proc. 17th Intl. Conf. on Very Large Data Bases, Barcelona, September 91.
5. Gatziu S., Geppert A., Dittrich K.R.; Integrating Active Concepts into an Object-Oriented Database System. Proc. of the 3. Intl. Workshop on Database Programming Languages, August 91.