[2] Then in 1997, Science Citation Index Expanded (SCIE) superseded SCI, and becomes available online.
SCIE is now owned by Clarivate (previously the Intellectual Property and Science business of Thomson Reuters).
These are alternatively described as the world's leading journals of science and technology, because of a rigorous selection process.
[8][9][10] The index is available online within Web of Science,[11][12] as part of its Core Collection (there are also CD and printed editions, covering a smaller number of journals).
[17] In 1992, an electronic and print form of the index was derived from a core of 330 chemistry journals, within which all areas were covered.