R. Alur, L. Fix, and T. A. Henzinger, “A determinizable class of timed automata,” in International Conference on Computer Aided Verification, Stanford, CA, United States of America, 1994, vol. 818, pp. 1–13.

R. Alur et al., “The algorithmic analysis of hybrid systems,” in 11th International Conference on Analysis and Optimization of Systems Discrete Event Systems, Sophia-Antipolis, France, 1994, vol. 199, pp. 331–351.

D. Zarkower, M. de Bono, R. Aronoff, and J. Hodgkin, “Regulatory rearrangements and smg-sensitive allels of the C. elegans sex-determining gene tra-1,” Developmental Genetics, vol. 15, no. 3. Wiley, pp. 240–250, 1994.