A citation count refers to the number of times a research work such as a journal article is cited by other works. It is considered as a reflection on the quality of the work, the assumption being that important or influential works will be cited more often than others.
An increasing number of databases include the citation count, a select list is given below. However, one needs to be aware that this count is not a true number of the times an article is cited because the citing article must be in the database for counts to be accurate.
Google Scholar tracks the number of times an article is cited. It is advisable to verify the data.