@INPROCEEDINGS{pahl:2011dagstuhl,  author = {Marc-Oliver Pahl},  title = {One Cloud for All - Virtual Revolution?},  booktitle = {Dagstuhl Report on the Seminar Secure Computing in the Cloud (invited talk)},  address={Schloss Dagstuhl, Germany},  month = {December},  year = {2011},  webpdf = {http://www.dagstuhl.de/mat/Files/11/11491/11491.PahlMarcOliver.Slides.pdf},  url = {http://pahl.de/?site=presentations/2011-12-04ff_Dagstuhl_seminar-Secure_computing_in_the_cloud}}