SCI (Science Citation Index), EI (Engineering Index) and ISTP (Science and Technology Conference Index) are three world-famous retrieval systems for scientific documents, which are internationally recognized as the main retrieval tools for scientific statistics and scientific evaluation.
Content contained
The periodicals collected by SCI mainly involve basic scientific research fields such as mathematics, science, chemistry, agriculture, forestry, medicine and biology. The selected journals come from more than 40 countries with more than 50 languages, among which the main countries are the United States, Britain, the Netherlands, Germany, Russia, France, Japan and Canada, and some China (including Hong Kong, Macao and Taiwan) journals are also included.
Refer to the above? Baidu encyclopedia-scientific citation index