Information Processing Letters
Information Processing Letters > 1995 > 53 > 3 > 165-172
Information Processing Letters > 1995 > 53 > 5 > 287-293
Information Processing Letters > 1995 > 53 > 6 > 329-332
Information Processing Letters > 1995 > 53 > 3 > 165-172
Information Processing Letters > 1995 > 53 > 5 > 287-293
Information Processing Letters > 1995 > 53 > 6 > 329-332