Web of Knowledge thomsonreuters.com

FACT:

Author cited references are captured for ALL full journal articles indexed, 1900 to present.

FACT:

Times Cited links are a standard feature within the Web of Science for all articles, 1900 to present.

FACT:

727,549,189 cited references, from 1900 to present, have been indexed.*

FACT:

Web of Science captures 65 million cited references every year
(to articles in journals covered and not covered)

FACT:

Data is quality controlled, so cited references within a multitude of formats are unified to a standard.

FACT:

Web of Science is the largest citation database available.
And is the only true cited reference index.