1. Lecture Notes in Computer Science;S. Cook,2006
2. Lecture Notes in Computer Science;W. Cook,2006
3. Dahl, O.-J., Nygaard, K.: SIMULA—a Language for Programming and Description of Discrete Event Systems. Technical report, Norwegian Computing Center (1965)
4. Dahl, O.-J., Nygaard, K.: SIMULA: an ALGOL-based Simulation Language. Communications of the ACM 9(9), 671–678 (1966)
5. Freeman-Benson, B.N., Borning, A.: Integrating Constraints with an Object-Oriented Language, June 29-July 3 (1992)