Siddhartha Rai Priti Shankar Efficient Statistical Modeling for the Compression of Tree Structured Intermediate Code. 476-486 2003 46 Comput. J. 5 http://www3.oup.co.uk/computer_journal/hdb/Volume_46/Issue_05/460476.sgm.abs.html db/journals/cj/cj46.html#RaiS03