URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::7cdab78fe97b874b903ae78e92b8b7a8https://doi.org/10.12816/0052079
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::841cc26d4e83c036132c25457a77923ehttps://doi.org/10.12816/0027506