@misc
{TN_libero_mab2,
author = {
Lingenfelser, Thomas
AND
Ell, Christian
},
title = {
Lower intestinal bleeding
},
publisher = {Elsevier BV},
isbn = {1521-6918},
keywords = {
Gastroenterology
},
year = {2001},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}