They provide first-hand testimony or direct evidence concerning a topic under investigation. They are created by witnesses or recorders who experienced the events or conditions being documented.

It uses a family of standard web feed formats to publish frequently updated information: journal contents, blog entries, news headlines, audio, video, etc.

It is the same as academic journal

It is the world's largest abstract and citation database of peer-reviewed literature.

In scholarship, a secondary source is a document or recording that relates to or discusses information originally presented elsewhere. An indexing & abstracting database is a kind of secondary sources, so are annual reviews in the field.

A term to describe the exponential increase in subscription cost of many scholarly journals.

It is an academic meeting for researchers to present and discuss their work.

A data storage device that includes flash memory with an integrated Universal Serial Bus (USB) interface.

It is the world's second largest abstract and citation database of peer-reviewed literature.