@inproceedings{Diehl:20102L, author = "Diehl, Roland", title = "{Concluding Remarks}", doi = "10.22323/1.096.0087", booktitle = "Proceedings of The Extreme sky: Sampling the Universe above 10 keV {\textemdash} PoS(extremesky2009)", year = 2010, volume = "096", pages = "087" }