الوصول الحر: https://doaj.org/article/21ff8c4e532c407387cc018e418a7ecdTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70461cf64e7df7d6f4935717fbb23c4dTesthttp://arxiv.org/abs/2305.07652Test