Satoru Ikehara Satoshi Shirai Hajime Uchino A Statistical Method for Extracting Uninterrupted and Interrupted Collocations from Very Large Corpora. 574-579 1996 COLING http://acl.ldc.upenn.edu/C/C96/C96-1097.pdf db/conf/coling/coling1996.html#IkeharaSU96