You will then see a list of results as seen below. In this example, the 1997 conference was the 4th record on the 2nd screen. To view the call number type 4. Keep in mind that conference proceedings are usually extremely difficult to find, and sometimes neither title searching nor author searching will produce a call number for the item. Do not assume that UIUC does not own a copy of the volume.
Many proceedings are difficult to find through the online catalog.
Do not hesitate to ask a reference librarian for assistance if you have difficulty locating an item. In addition, if you are looking for proceedings sponsored by IEEE, SPIE, MRS, or AIAA you may want to try one of the local databases created at Grainger. They provide the call numbers to proceedings that are frequently requested, but are difficult to find on the online catalog.