@book{
181-010408536,
title = {Understanding data communications},
author = {Kauffels, Franz-Joachim.},
address = {Chichester},
publisher = {Ellis Horwood},
year = {1989},
isbn = {0745807003},
isbn = {0470215666 (Halsted Press)},
language = {English},
url = {https://katalog.fid-bbi.de/Record/181-010408536}
}