Information Processing Letters
Information Processing Letters > 1997 > 61 > 2 > 113-120
Information Processing Letters > 1997 > 61 > 2 > 77-81
Information Processing Letters > 1997 > 61 > 3 > 121-127
Information Processing Letters > 1997 > 62 > 3 > 153-159
Information Processing Letters > 1997 > 62 > 4 > 193-199
Information Processing Letters > 1997 > 62 > 5 > 223-230
Information Processing Letters > 1997 > 63 > 2 > 91-95
Information Processing Letters > 1997 > 63 > 3 > 167-170
Information Processing Letters > 1997 > 63 > 5 > 237-241