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\bibitem{Gribaudo_etal2003} Marco Gribaudo, Andras Horv{\~A}{\textexclamdown}th, Andrea Bobbio, Enrico Tronci, Ester Ciancamerla, and Michele Minichino. "Fluid Petri Nets and hybrid model checking: a comparative case study." \textit{Int. Journal on: Reliability Engineering \& System Safety} 81, no. 3 (2003): 239--257. Elsevier. DOI: 10.1016/S0951-8320(03)00089-9.

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