@misc
{TN_libero_mab2,
author = {
Hopf, Eberhard
},
title = {
Zur Kennzeichnung der Euklidischen Norm
},
publisher = {Springer Science and Business Media LLC},
isbn = {0025-5874},
isbn = {1432-1823},
keywords = {
General Mathematics
},
year = {1959},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}