Gerard Ellis Compiling Conceptual Graphs. 68-81 1995 7 IEEE Trans. Knowl. Data Eng. 1 db/journals/tkde/tkde7.html#Ellis95 db/journals/tkde/Ellis95.html TKDE7/k0068.pdf books/mit/AitKaci91 ... ... ... ... ... conf/iccs/Levinson94 ... conf/aaai/LevinsonS91 ... conf/iccs/MugnierC93 ... conf/ijcai/SchmolzeL83 books/aw/Sowa84 ... ...