URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::466a4c0394f1760c41296b2cef676af1https://doi.org/10.1055/s-2008-1039567
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::4ef8263da0be4e474220c84ae2e1e307https://doi.org/10.1055/s-0038-1632798
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::f3b5ac35257eac7feb74516d84dab4b9https://doi.org/10.1055/s-2008-1079639