@book
{TN_libero_mab2,
author = {
Courant, Richard
Robbins, Herbert
AND
Courant, Richard
},
title = {
Was ist Mathematik?
},
publisher = {Springer},
keywords = {
Mathematics
,
Lehrbuch
,
Mathematik
},
year = {1962},
address = {
Berlin [u.a.]
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}