Information Processing Letters
Information Processing Letters > 1999 > 69 > 5 > 221-225
Information Processing Letters > 1999 > 70 > 2 > 99-105
Information Processing Letters > 2001 > 77 > 2-4 > 97-108
Information Processing Letters > 2002 > 83 > 1 > 7-12
Information Processing Letters > 2002 > 83 > 3 > 167-172
Information Processing Letters > 2003 > 88 > 1-2 > 45-51
Information Processing Letters > 2004 > 92 > 6 > 279-285
Information Processing Letters > 2006 > 99 > 4 > 158-162
Information Processing Letters > 2006 > 100 > 2 > 72-75
Information Processing Letters > 2011 > 111 > 6 > 278-286