@unpublished{publication-24265, author={Paolella, Marc and Polak, Pawel and Walker, Patrick S}, doi={10.2139/ssrn.4652551}, institution={University of Zurich}, issn={1556-5068}, number=4652551, pages=29, series={SSRN}, title={Risk Parity Portfolio Optimization under Heavy-Tailed Returns and Time-Varying Volatility}, year=2023, }