الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od_______325::331f4bf9e003fcfd485d95be5a5ad402Testhttps://escholarship.org/uc/item/8z24j3h6Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad288dbd0034de321da3b22c4c3a895bTesthttps://publikationen.bibliothek.kit.edu/1000150017/149174224Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8e71ff1dce9a0bcf0b671ae46809cecTest