الإتاحة: https://doi.org/10.1002/ejp.1736Testhttp://hdl.handle.net/10147/631333Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c83c42e099a1a15bdec1e53a2613b0aTesthttps://pubmed.ncbi.nlm.nih.gov/21463471Test