Academic Resource Index Researchbib
Berlin Social Science Center, WZB
Directory of Research Journals Indexing
Elektronische Zeitschriftenbibliothek provided by Hochschule Hannover University of Applied Sciences and Arts
Hochschule Zittau/Görlitz University of Applied Sciences
International Committee of Medical Journal Editors (ICMJE)
Leibniz Information Center for Science and Technology University Library (TIB)
NSD – Norwegian Centre for Research Data, Norwegian Register for Scientific Journals, Series and Publishers
Revistas científicas electrónicas IBT-CCG UNAM
Social Science Research Center Berlin, Electronic Journals Library, EZB provided by University Library of Regensburg and Federal Ministry of Education and Research, Germany
UNIVERSITÄTS BIBILIOTHEK LEIPZIG (UBL)
WILBERT, Wildauer Bücher+E-Medien Recherche-Tool
ZDB Zeitschriften Datenbank provided by Deutsche National Bibliothek and Staatsbibliothek zu Berlin