URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0de994aad19e6ff58c6df63f38b8ac8ehttps://projecteuclid.org/euclid.as/1610420418
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57fde4ae4aa1ec72a9a7ae9cc5d2b572https://projecteuclid.org/euclid.ajas/1558059080
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d1397601d66d40a604112d66c671b75https://projecteuclid.org/euclid.as/1547089219