The h-index quantifies the actual scientific productivity and the apparent impact of the scientist. The h-index is based on the author’s most cited papers and the number of citations they have received from other articles.
"A scientist has index h if h of his/her Np papers have at least h citations each, and the other (Np − h) papers have no more than h citations each." [For details in calculation, see Hirsch, 2005] An h-index of 16 means, for example, that a researcher has published 16 papers that each had at least 16 citations. Therefore, the h-index reflects both the number of articles as well as the number of citations per article.
How to find the h-index of an individual author in Web of Science:
Citation analysis, which involves counting how many times a paper or researcher is cited, assumes that influential scientists and important works are cited more often than others.
Cited Reference Search is one of the features in the Web of Science database. The number in the Citing Articles column in WoS indicates the number of times the reference has been cited in all years of Web of Science, regardless of how many years you are searching. Note that Citing Article references may not include all the known citations of the paper, just those in journals covered by WoS.
How To Perform a Web of Science Cited Reference Search:
For further help:
Google Scholar (GS) covers peer-reviewed papers, theses, books, abstracts, and other scholarly literature from all broad areas of research and from a wide variety of academic publishers and professional societies, as well as scholarly articles available across the web. Each Google Scholar search result contains bibliographic information, such as the title, author names, and source of publication. At the end of the search result is a “Cited by” link, which will display a list of articles and documents that have cited the document originally retrieved in the search. Note that this only includes resources indexed by Google Scholar.
There have been some criticisms of Google ScholarCited References, such as:
How to find Cited References in Google Scholar: