Open Access Policy 

Birlesik Dunya Yenilik Arastirma ve Yayincilik Merkezi (BD-Center) is a gold open access publisher.  At the point of publication, all articles from our portfolio of journals are immediately and permanently accessible online free of charge. BD-Center articles are published under the CC-BY license [Attribution 4.0 International (CC BY 4.0)], which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and the source are credited.