Information Processing Letters
Information Processing Letters > 1999 > 69 > 3 > 123-126
Information Processing Letters > 1999 > 69 > 4 > 189-195
Information Processing Letters > 1999 > 69 > 6 > 283-289
Information Processing Letters > 1999 > 70 > 1 > 7-11
Information Processing Letters > 1999 > 70 > 2 > 53-55
Information Processing Letters > 1999 > 71 > 3-4 > 107-113
Information Processing Letters > 1999 > 71 > 3-4 > 97-105
Information Processing Letters > 1999 > 71 > 3-4 > 149-153
Information Processing Letters > 1999 > 71 > 5-6 > 183-186