@incollection{HaasMohren2005, author = {Haas, Stephanie and Mohren, Henning}, title = {PKI-Kooperationen zwischen Hochschulen und externen Einrichtungen}, booktitle = {12. Workshop Sicherheit in Vernetzten Systemen}, editor = {Marco Thorbr{\"u}gge}, isbn = {3000153691}, year = {2005}, }