Information Processing Letters
Information Processing Letters > 1995 > 55 > 1 > 33-39
Information Processing Letters > 1997 > 64 > 1 > 43-51
Information Processing Letters > 1998 > 66 > 2 > 71-79
Information Processing Letters > 2006 > 100 > 1 > 29-35
Information Processing Letters > 2007 > 103 > 4 > 157-162
Information Processing Letters > 2010 > 110 > 23 > 1055-1060
Information Processing Letters > 2011 > 111 > 12 > 609-613