@misc
{TN_libero_mab2,
author = {
International Civil Aviation Organization
},
title = {
ICAO circular
},
publisher = {ICAO},
isbn = {0074-2481},
keywords = {
Monografische Reihe
},
year = {1948-},
address = {
Montreal
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}