URL: eee.elearningpa ... http://eee.elearningpapers.eu
SUDOC: www.sudoc.fr/11 ... http://www.sudoc.fr/113970684
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15816405
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/cairfoprl5gwhkdlh6nikd4rhy
URL: eee.elearningpa ... http://eee.elearningpapers.eu
SUDOC: www.sudoc.fr/11 ... http://www.sudoc.fr/113970684
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15816405
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/cairfoprl5gwhkdlh6nikd4rhy
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%221887-1542%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%221887-1542%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%221887-1542%22