Information Processing Letters
Information Processing Letters > 1996 > 57 > 6 > 313-319
Information Processing Letters > 2004 > 91 > 5 > 245-250
Information Processing Letters > 2018 > 138 > C > 61-66
Information Processing Letters > 1996 > 57 > 6 > 313-319
Information Processing Letters > 2004 > 91 > 5 > 245-250
Information Processing Letters > 2018 > 138 > C > 61-66