Please note that the following description has been taken from the documentation of Jeff Erickson's biblook program. Find the BibTeX entries containing the given words in any field with a prefix matching the .field. argument. Each word is a contiguous sequence of letters and digits. Case is ignored, accents should be omitted, and apostrophes are not required. Single characters and a few common words are also ignored.
Any word ending with an asterisk is treated as a prefix.
Intersect the results of the given search with the previous search. Several of these commands may be combined on a single line. Commands are handled in the order in which they appear-there is no precedence. Do not intersect but combine the results of the given search with the previous search.