@unpublished{publication-8842,
	author={Leippold, Markus and Egloff, Daniel and Dalbert, Curdin and J{\"o}hri, Stephan},
	institution={University of Zurich},
	number=693441,
	series={SSRN},
	title={Optimal Importance Sampling for Credit Portfolios with Stochastic Approximation},
	year=2005,
}