Yun Sing Koh Nathan Rountree Richard A. O'Keefe Finding Non-Coincidental Sporadic Rules Using Apriori-Inverse. 38-54 2006 2 IJDWM 2 http://dx.doi.org/10.4018/jdwm.2006040102 db/journals/jdwm/ijdwm2.html#KohRO06