الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad3bc703806769df42723ccab73b72acTesthttp://vddb.library.lt/fedora/get/LT-eLABa-0001:J.04~2013~ISSN_1471-2458.V_13.PG_31/DS.002.1.01.ARTICTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e1e6542971378f3ae0ee7c1f90b6ab4Testhttps://library.lsmuni.lt/LSMU:ELABAPDB6183433&prefLang=en_USTest