Information Processing Letters
Information Processing Letters > 2005 > 93 > 4 > 185-190
Information Processing Letters > 2005 > 93 > 4 > 191-198
Information Processing Letters > 2005 > 93 > 4 > 177-183
Information Processing Letters > 2005 > 93 > 4 > 199-206
Information Processing Letters > 2005 > 93 > 4 > 169-171
Information Processing Letters > 2005 > 93 > 4 > 163-168