Bibtex
Case note{nokey,
title = {Annotatie Pippig Augenoptik / Hartlauer Handelsgesellschaft,},
author = {Kabel, J.},
url = {http://www.ivir.nl/publicaties/download/annotatie-Pippig.pdf},
year = {1030},
date = {2003-10-30},
journal = {IER},
number = {5},
}