| If more than one field is used, they
are connected by inter-field boolean operators (AND, OR or
NOT).
By default the fields are automatically connected by AND. Use
AND
if you want to narrow the query; if you want to expand the query use
the
OR operator.
For instance, if you are interested in the
publications written by Brown and Smith (as co-authors) in the
years 1994 -1996 in English, you can specify as follows:To connect terms with the Boolean operators
AND or OR between two or more fields you have to select the Boolean operator
located above the field. The system will interpret the request as seeking
records published in 1994, 1995 or 1996, co-authored by Brown
and Smith. |
