@unpublished{publication-19144,
	author={Nyborg, Kjell G},
	doi={10.2139/ssrn.3335203},
	institution={University of Zurich},
	number={19-04},
	pages=58,
	series={Swiss Finance Institute Research Paper},
	title={Repo Rates and the Collateral Spread Puzzle},
	year=2019,
}