The ACM Guide and Digital Library with a set of internal and external reference and citation links giving access to current research.

Secondary reference database of reviews in computing literature from the ACM. Limited information to non-subscribers.

Springer books and journals in computing for scientists and students in computer science, as well as for computer professionals and experts.

Indexes 200, 000 citations from conferences and journals - submit tables of contents.

Searchable collection of bibliographies, including 1 million citations and 100, 000 links to on-line documents - submit new bibliographies. Browse by subject.

Indexes on-line articles from institutions archives - 300, 000 in maths, computer science and physics - full-text search.