URL: www.journaldds. ... https://www.journaldds.org/
URL: www.journaldds. ... https://www.journaldds.org/
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%222949-6985%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%222949-6985%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%222949-6985%22
Koninklijke Bibliotheek: opc4.kb.nl/DB=1 ... http://opc4.kb.nl/DB=1/LNG=EN/CMD?ACT=SRCHA&IKT=8&TRM=2949-6985
CROSSREF: search.crossref ... https://search.crossref.org/?q=+2949-6985