@unpublished{publication-21225,
	author={Ulrych, Urban and Burkhardt, Raphael},
	doi={10.2139/ssrn.4006420},
	institution={University of Zurich},
	number={22-07},
	pages=18,
	series={Swiss Finance Institute Research Paper},
	title={Sparse and Stable International Portfolio Optimization and Currency Risk Management},
	year=2022,
}