Abstracting and Indexing

»Directory of Open Access Journals (DOAJ)

» EBSCO Discovery Service (EDS)

» EBSCO Central & Eastern European Academic Source (CEEAS)

» ISSN International Centre

» Library of Congress

» Crossref

» Crossref’s Cited-by Service

» ROAD - Directory of open access scholarly resources

» Keepers Registry

» SHERPA/RoMEO

» Committee on Publication Ethics (COPE)

» Ulrichsweb

» China Academic Journals (CNKI)

» J-Gate

» Google Scholar

» Publons

» Mendeley

» BASE (Bielefeld Academic Search Engine)

» Scilit

» AGORA

» Garba Rujukan Digital (GARUDA)

» CORE

» Hinari

» OpenAir

» KOAR: Korea Open Access platform for Researchers

» Norwegian Register For Scientific Journals (NSD)

» Dimensions, Powered by Digital Science

» Sciencegate

»  ASOS Index

» TIB

» German Union Catalogue (SWB) (Germany)

» Indonesia's Research Repository (Neliti)

» Osmikon Search 

» EZB

» Academia

» OARE

» ARDI

» Index Copernicus

» Genamics JournalSeek

» KUDOS

» WorldCat

» UBL (Universitas Bibliotek Leipzig)

» SCIPIO

» Elektronische Zeitschriften

» World Wide Science

» TurkEgitiminDeksi

» ResearchBib

» SIS Index

» COSMOS

» ESJI (Eurasian Scientific Journal Index)

» IP Indexing

» JOURNAL FACTOR

» Root Society for Indexing and Impact Factor

» I2OR

» Saif Scholars Impact

» Slideshare

» Internation Scientific Indexing (ISI)

» sjifactor

» International Citation Index (ICI)

» Calameo

» Opacplus

» Beluga – Catalogue of Hamburg Libraries

» Tpbin

» ResearchGate

» Ilmenauer Discovery Tool

» German Union Catalogue of Serials (ZDB)

» semanticScholar

» Kurt-Schwitters-Forum Library Online Catalogue

» ULB Database

» THULB Database

» ORBIS Plus

» German Union Catalogue of Serials (ZDB)

» Southwest German Library Association (SWB)

» GVK Database Germany

» HUC Database Germany

» Regional Catalog Stock Germany

» EuroPub

» SafetyLit

» Baidu

» World Catalogue of Scientific Journals

» Scite

» Microsoft Academic

» Naver Academic

» Busca Integrada

» Knihovny.cz

» Researcher.life

» Lens.org

Libraries

» Harvard University

» Technical University of Applied Sciences, WILDAU

» Columbia University Libraries

» Michigan State University

» Technical University of Denmark

» University of Vechta

» University of Washington

» Goethe University Frankfurt

» Universität Hamburg

» Kyushu University Library

» University of Reading

» Federal Science Library - Canada

» Library of Bauhaus-Universität Weimar Germany

» University of Victoria

» Anderson University-Nicholson Library

» University of North Carolina

» National Library of Australia

» Queen Mary University of London

» Central Michigan University Library

» Yale University Library

» Princeton University Library

» Memorial university of newfoundland

» Library Hub Discover

» Carolina University

» University of Münster

» Stanford University

» Cairn University

» Newcastle University

» Ghent University Library

» Ajman University Library

»UNSW Sydney University

» University of Tokyo Library System

» La Trobe University Library

» University of Pretoria

» Vancouver Island University

» Portal de Busca Integrada

» UCL Library Services

» University of Bristol Library

» University of Strathclyde Library