共 14 条
[1]
Berstel J., 2002, THEORY CODES
[3]
Ginsburg S., 1966, The Mathematical Theory of Context-Free Languages
[4]
Haines L.H., 1969, J COMBINATORIAL THEO, V6, P94, DOI [DOI 10.1016/S0021-9800(69)80111-0, 10.1016/s0021-9800(69) 80111-0]
[5]
Howie J.M., 1991, Automata and Languages
[8]
Jurgensen H., 1993, LECTURE NOTES COMPUT, V710, P50
[9]
Jurgensen H., 1992, 327 U W ONT DEP COMP
[10]
Shyr H. J., 1977, LECT NOTES MATH, V586, P180