This book deals with the evaluation of scholarly performance, and focuses on the contribution of scholarly work to the advancement of scholarly knowledge. Citation analysis involves the construction and application of series of indicators of the 'impact' influence or quality of scholarly work derived, from references cited in footnotes or bibliographies of scholarly research publications. It describe primarily the use of the data extracted from the science citation index and the web of science, published by the institute for scince information (ISI)Thomson Scientific.