You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (transition or translation) on petri nets and other models of concurrency,~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (transition OR translation) on petri nets AND other models of concurrency,.
• Adding a wildcard symbol may retrieve word variants: (transition or translation) on petri nets and other models of concurrency,*.