Included in this database is AJ (Abstract Journal), indexed from 1981 to the present day.
[1][2][3] The database is made up of published materials encompassing, conference proceedings, trade publications, thesis, periodicals, books, patents, regulatory documents, and collected scientific literature.
The database produces documents that have a bibliographal description, keywords, a heading and an abstract.
A single Polythematic database was added in 2001, which is able to combine all the thematic fragments, except for "Mathematics".
The foreign works are characterized as scientific, technical, legal and economics literature, focused and related to a defined area of science and technology.