") to keep words togehter: An example is
"process mining". It is also possible to restrict the search to dedicated fields:
OR. Thereby, the default operator is
author:smith and author:jones: search for references with authors "smith" and "jones"
author:smith or author:jones: search for references with either author "smith" or author "jones"
author:smith and not title:processor: search for author "smith" and omit references with "processor" in the title
and. The use of
andis optional, though.
?after the first name for several given names. E.g.
author:grodke and title:db2
field:"text". The supported fields are:
title: The title of the article
author: an author of the article
journal: journal title (sent as
pt: publication title
May \[au\] AND Anderson \[au\]
Anderson RM \[au\] HIV \[ti\]
Valleron \[au\] 1988:2000\[dp\] HIV \[ti\]
Valleron \[au\] AND 1987:2000\[dp\] AND (AIDS \[ti\] OR HIV\[ti\])
Anderson \[au\] AND Nature \[ta\]
OR. Queries are case-insensitive. Further operators that can be used are
NOTfor logical negation,
*for a right wildcard,
" "for exact phrase matches, and parentheses
( )to group terms. Optionally, it is possible to add a field name in the form field:text to limit the search results. The supported fields are: