الوصول الحر: https://doaj.org/article/7666b2129e434c49b474cd4eef328a4cTest
الوصول الحر: https://doaj.org/article/c06511c473e341cab54932c75923b7f1Test
الإتاحة: https://doi.org/10.2196/42187Testhttps://repositori.udl.cat/handle/10459.1/463965Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7edb7292be558d9b593ed23c2b151382Testhttps://hal.science/hal-03049180Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3393a83035348e559e660ef6a07f156Testhttp://www.ijic.org/index.php/ijic/article/view/1364Test