References
- Brzozowski , J. 1968 . Regular like expressions for some irregularlanguages . 9th IEEE Symposium on Switching and Automata Theory . Oct 1968 .
- Culik I I , K. and Lindenmayer , A. 1976 . Parallel graph generating and graph recurrence systems for multicellular development . Int. J. General Systems , 3 Oct : 53 – 66 .
- Salomaa , A. 1973 . “ Formal Languages ” . London, New York : Academic Press .
- Berztiss , A. T. 1971 . Data Structures , London, New York : Academic Press .
- Bays , C. 1976 . A non-recursive technique for recreating a diagraph from it K-formular representation . Computer Journal , 19 : 326 – 328 .
- Reeker , L. H. 1971 . “ State graphs and context-free languages ” . In Theory of Machines and Computations , Edited by: Kohavi , Z. and Paz , A. 143 – 151 . Academic Press .