- FOCS, page 236-243. IEEE Computer Society, (1982)
- Fundam. Inform. 25(3):285-293 (1996)
- Theor. Comput. Sci. 5(2):129-134 (1977)
- Theor. Comput. Sci. (1988)
- Theor. Comput. Sci. 46(3):101-106 (1986)
- Theor. Comput. Sci. (1979)
- Theor. Comput. Sci. (1984)
- Theor. Comput. Sci. (1981)
- Theor. Comput. Sci. 134(2):403-413 (1994)
- Inf. Process. Lett. 28(1):1-4 (1988)
- Inf. Process. Lett. 13(2):45-47 (1981)
- Inf. Process. Lett. 16(1):27-30 (1983)
- Inf. Process. Lett. 23(4):171-175 (1986)
- Inf. Comput. 73(1):59-74 (April 1987)
- Inf. Comput. 138(2):160-169 (1997)
- J. Comput. Syst. Sci. 35(3):311-320 (1987)
- J. Comput. Syst. Sci. 18(3):307-333 (1979)
- J. Comput. Syst. Sci. 26(1):14-33 (1983)
- J. Comput. Syst. Sci. 29(1):54-57 (1984)
- FCT, volume 2751 of Lecture Notes in Computer Science, page 355-363. Springer, (2003)


author