المؤلفون: Gspan, Christian, Grogger, Werner, Bucher, Edith, Sitte, Werner, Hofer, Ferdinand
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::92c4d9ff754062cd4a8e4c639de14628Test
المؤلفون: Sitte, Werner
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::005cd88c194dca08e19c23eceac81597Test