@article{publication-1401,
	author={van Kleef, R C and Beck, K and Buchner, F},
	doi={10.1057/gpp.2010.25},
	issn={1018-5895},
	journal={The Geneva Papers on Risk and Insurance - Issues and Practice},
	number=4,
	pages={503-520},
	publisher={Palgrave Macmillan},
	title={Risk-type concentration and efficiency incentives: a challenge for the risk adjustment formula},
	volume=35,
	year=2010,
}