Information Processing Letters
Information Processing Letters > 2007 > 101 > 3 > 134-138
Information Processing Letters > 2007 > 103 > 4 > 150-156
Information Processing Letters > 2007 > 104 > 4 > 146-151
Information Processing Letters > 2008 > 105 > 5 > 206-211
Information Processing Letters > 2008 > 107 > 3-4 > 102-106
Information Processing Letters > 2009 > 109 > 7 > 343-346
Information Processing Letters > 2011 > 111 > 20 > 1019-1021
Information Processing Letters > 2012 > 112 > 20 > 767-771
Information Processing Letters > 2013 > 113 > 9 > 354-356
Information Processing Letters > 2013 > 113 > 18 > 659-663