الإتاحة: https://doaj.org/article/5bded788f1f64b7283d8256ca2229857Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::7a168a61571ce37766d24f32d8460e12Testhttps://doi.org/10.35197/rx.07.02.2011.07.jgTest