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