Anthony K. H. Tung Hongjun Lu Jiawei Han Ling Feng Efficient Mining of Intertransaction Association Rules. 43-56 2003 15 IEEE Trans. Knowl. Data Eng. 1 http://doi.ieeecomputersociety.org/10.1109/TKDE.2003.1161581 db/journals/tkde/tkde15.html#TungLHF03