الوصول الحر: http://europeana.eu/portal/record/2022701/oai_157_88_20_52_10324_3045.htmlTest
الإتاحة: https://doi.org/10.1016/j.ejvsextra.2006.04.005Testhttps://api.elsevier.com/content/article/PII:S1533316706000628?httpAccept=text/xmlTesthttps://api.elsevier.com/content/article/PII:S1533316706000628?httpAccept=text/plainTest
الإتاحة: https://doi.org/10.1016/j.ejvs.2006.04.039Testhttps://api.elsevier.com/content/article/PII:S1078588406002826?httpAccept=text/xmlTesthttps://api.elsevier.com/content/article/PII:S1078588406002826?httpAccept=text/plainTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::25e32d23471c62b2668951f0902990dfTest