Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. Google Scholar helps you find relevant work across the world of scholarly research.

Index Copernicus (IC) is a world-wide gateway to complex scientific information. Index Copernicus’ innovative approach to the international scientific information services is integrative, interactive and inclusive.IJEAST has high IC value .

The aim of the Directory of Open Access Journals(DOAJ) is to increase the visibility and ease of use of open access scientific and scholarly journals thereby promoting their increased usage and impact.

ResearchGate is a social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators

CiteSeerx is an evolving scientific literature digital library and search engine that has focused primarily on the literature in computer and information science.

In computing, a digital object identifier (DOI) is a persistent identifier or handle used to identify objects uniquely, standardized by the International Organization for Standardization (ISO).An implementation of the Handle System, DOIs are in wide use mainly to identify academic, professional, and government information, such as journal articles, research reports and data sets, and official publications though they also have been used to identify other types of information resources, such as commercial videos.