@incollection{55719,
author = {Ingemar Bengtsson and Stephan Weis and Karol Zyczkowski},
title = {{Geometry of the set of mixed quantum states\,:\,an apophatic approach}},
series = {Trends in mathematics},
doi = {10.1007/978-3-0348-0448-6\_15},
booktitle = {Geometric methods in physics\,:\,XXX Workshop, Bialowieza, Poland, June 26 to July 2,
2011},
editor = {Piotr Kielanowski},
publisher = {Springer},
address = {Basel},
year = {2013},
pages = {175--197},isbn={978-3-0348-0447-9},
}