Information Processing Letters
Information Processing Letters > 2009 > 109 > 5 > 296-300
Information Processing Letters > 2009 > 109 > 10 > 504-508
Information Processing Letters > 2009 > 109 > 11 > 568-571
Information Processing Letters > 2009 > 109 > 11 > 553-559
Information Processing Letters > 2009 > 109 > 15 > 842-845
Information Processing Letters > 2009 > 109 > 16 > 887-896
Information Processing Letters > 2009 > 109 > 17 > 1015-1020
Information Processing Letters > 2009 > 109 > 18 > 1066-1070
Information Processing Letters > 2009 > 109 > 18 > 1097-1104
Information Processing Letters > 2009 > 109 > 20 > 1156-1160