URL: www.springerlin ... http://www.springerlink.com/content/106469/
URL: firstsearch.ocl ... http://firstsearch.oclc.org
URL: firstsearch.ocl ... http://firstsearch.oclc.org/journal=0015-4628;screen=info;ECOIP
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038709457
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15759476
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/7gkmiacklzeufiw5b42bl66gly
URL: www.springerlin ... http://www.springerlink.com/content/106469/
URL: firstsearch.ocl ... http://firstsearch.oclc.org
URL: firstsearch.ocl ... http://firstsearch.oclc.org/journal=0015-4628;screen=info;ECOIP
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038709457
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15759476
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/7gkmiacklzeufiw5b42bl66gly
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%220015-4628%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%220015-4628%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%220015-4628%22
CROSSREF: search.crossref ... https://search.crossref.org/?q=+0015-4628
