Information Processing Letters
Information Processing Letters > 2000 > 76 > 3 > 113-119
Information Processing Letters > 2000 > 76 > 3 > 135-139
Information Processing Letters > 2000 > 76 > 4-6 > 169-174
Information Processing Letters > 2000 > 76 > 4-6 > 175-181
Information Processing Letters > 2000 > 76 > 4-6 > 149-153
Information Processing Letters > 2000 > 76 > 4-6 > 163-168
Information Processing Letters > 2000 > 76 > 4-6 > 155-162