URL الوصول: https://doaj.org/article/971ff11a00384984a71105aff6419913
URL الوصول: https://doaj.org/article/da875a4bb9044b1cadac09ece8665a8b
URL الوصول: https://doaj.org/article/4b33ebcc8bb246749534460991b1a2fa
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8633e657751d6b5ad6dfed7c05dfcd56https://doaj.org/article/971ff11a00384984a71105aff6419913
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc7e861bd6f6ead63afa023bf5d196e9https://doi.org/10.1155/2015/670302