1. Understanding Emergency Wait Times: Who is Using Emergency Departments and How Long are They Waiting. Canadian Institute for Health Information (2005)
2. Abiteboul, S., Hull, R., Vianu, V.: Foundations of Databases. Addison-Wesley (1995)
3. Abiteboul, S., Kanellakis, P.C., Grahne, G.: On the Representation and Querying of Sets of Possible Worlds. Theor. Comput. Sci. 78(1), 158–187 (1991)
4. An, Y., Borgida, A., Miller, R.J., Mylopoulos, J.: A Semantic Approach to Discovering Schema Mapping Expressions. In: ICDE, pp. 206–215 (2007)
5. Arocena, P.C., Miller, R.J., Mylopoulos, J.: Vivification in Business Intelligence. In: Ng, R.T. (ed.) Perspectives on Business Intelligence. Synthesis Lectures on Data Management, vol. 5(1), pp. 33–52. Morgan & Claypool (2013)