T. A. Henzinger, B. Horowitz, R. Majumdar, and H. Wong Toi, “Beyond HyTech: Hybrid systems analysis using interval numerical methods,” in Proceedings of the 3rd International Workshop on Hybrid Systems, Pittsburgh, PA, USA, 2000, vol. 1790, pp. 130–144.
LibreCat: https://research-explorer.ista.ac.at/record/4481
DOI: 10.1007/3-540-46430-1_14

T. A. Henzinger and J. Raskin, “Robust undecidability of timed and hybrid systems,” in Proceedings of the 3rd International Workshop on Hybrid Systems, Pittsburgh, PA, USA, 2000, vol. 1790, pp. 145–159.
LibreCat: https://research-explorer.ista.ac.at/record/4434
DOI: 10.1007/3-540-46430-1_15