共 18 条
[3]
CHAN T, 1980, THESIS CORNELL U
[4]
Fischer P. C., 1968, Mathematical Systems Theory, V2, DOI 10.1007/BF01694011
[5]
FRIEDMAN E, UNPUBLISHED
[7]
Garey M. R., 1978, COMPUTERS INTRACTABI
[8]
Greibach S. A., 1976, Theoretical Computer Science, V1, P269, DOI 10.1016/0304-3975(76)90072-4
[10]
GURARI E, 1979, TRCS794 U WISC MILW