Hybrid automata: An algorithmic approach to the specification and verification of hybrid systems
R. Alur, C. Courcoubetis, T.A. Henzinger, P. Ho, in:, R. Grossman, A. Nerode, A. Ravn, H. Rischel (Eds.), Hybrid Systems, Springer, 1993, pp. 209–229.
LibreCat: https://research-explorer.ista.ac.at/record/4618
DOI: 10.1007/3-540-57318-6_30

Automatic symbolic verification of embedded systems
R. Alur, T.A. Henzinger, P. Ho, in:, 1993 Proceedings Real-Time Systems Symposium, IEEE, 1993, pp. 2–11.
LibreCat: https://research-explorer.ista.ac.at/record/4616
DOI: 10.1109/REAL.1993.393520 

Computing accumulated delays in real-time systems
R. Alur, C. Courcoubetis, T.A. Henzinger, in:, 5th International Conference on Computer Aided Verification, Springer, 1993, pp. 181–193.
LibreCat: https://research-explorer.ista.ac.at/record/4620
DOI: 10.1007/3-540-56922-7_16

Parametric real-time reasoning
R. Alur, T.A. Henzinger, M. Vardi, in:, Proceedings of the 25th Annual ACM Symposium on Theory of Computing, ACM, 1993, pp. 592–601.
LibreCat: https://research-explorer.ista.ac.at/record/4619
DOI: 10.1145/167088.167242