الإتاحة: http://platform.almanhal.com/EDS/Details/?id=2-55263
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::f981797838420f30b2fd7644beeee6c1https://doi.org/10.12816/0017774
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::a183819de4cbd6fa21a39c39c5933e74https://doi.org/10.12816/0010439