OPEN ACCESS - KNOWLEDGE FOR ALL | HOME PAGE

Scirus is a search tool specifically for scientific information that has been developed by the scientific publisher Elsevier. It enables users to search various types of scientific content such as journal articles, courseware, pre-print server material, patents and website information.

Google Scholar is a search tool for scholarly literature. It enables users to search across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations.

Google, the most popular search engine, enables users to search and browse the Web for general content. It also returns results with scientific content.