الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29b980a0070b8062d8e1fb05d326883aTesthttps://doi.org/10.1016/j.ejca.2017.01.029Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::efe4b2831af88339cd33f42ffb8a1373Testhttps://doi.org/10.1016/s0959-8049Test(16)31597-0