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European Actuarial Journal > 2019 > 9 > 1 > 109-138
Swiss Journal of Economics and Statistics > 2008 > 144 > 2 > 153-195
European Actuarial Journal > 2019 > 9 > 1 > 109-138
Swiss Journal of Economics and Statistics > 2008 > 144 > 2 > 153-195