Journal Citation Reports [Datenbank]  

Journal Citation Reports is a comprehensive and unique resource tool that allows you to evaluate and compare journals using citation data drawn from over 7,000 scholarly and technical journals from more than 3,300 publishers in over 60 countries. It is the only source of citation data on journals, and includes virtually all specialties in the areas of science, technology, and social sciences. Journal Citation Reports can show you the: - Most frequently cited journals in a field - Highest impact journals in a field - Hottest journals in a field - Leading journals in a field - Most published articles in a field.

BASE - Bielefeld Academic Search Engine [Datenbank]  

BASE (Bielefeld Academic Search Engine) is one of the world's most voluminous search sengines especially for academic web resources, e.g. journal articles, preprints, digital collections, images / videos or research data. Other than search engines like Google or Bing BASE searches the deep web as well. The sources which are included are intellectually selected and reviewed. BASE is operated by Bielefeld University Library.

CiteSeerX [Datenbank]  

CiteSeerx is a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science. CiteSeerx aims to improve the dissemination of scientific literature and to provide improvements in functionality, usability, availability, cost, comprehensiveness, efficiency, and timeliness in the access of scientific and scholarly knowledge.