Carl Adam Petri.
State-transition structures in physics and computation.
International Journal of Theoretical Physics, 21(12):979-992,
1982.
@ARTICLE{Petri82, AUTHOR = {Petri, Carl Adam}, JOURNAL = {International Journal of Theoretical Physics}, NUMBER = {12}, PAGES = {979--992}, TITLE = {State-Transition Structures in Physics and Computation}, VOLUME = {21}, YEAR = 1982 }