@misc{AcciaioFoellmerPenner2010, author = {Beatrice Acciaio and Hans F{\"o}llmer and Irina Penner}, title = {Risk assessment for uncertain cash flows: Model ambiguity, discounting ambiguity, and the role of bubbles}, institution = {Humboldt-Universit{\"a}t zu Berlin}, type = {preprintmatheon}, year = {2010}, }