Fernando García-Vallés José Manuel Colom Joaquín Ezpeleta Comments on "Deadlock avoidance policy for Petri net modeling of flexible manufacturing systems with shared resources. 1760-1761 2000 45 IEEE Trans. Autom. Control. 9 https://doi.org/10.1109/9.880643 https://www.wikidata.org/entity/Q57985090 db/journals/tac/tac45.html#Garcia-VallesCE00