Levy, Haim; Levy, Azriel - In: International Economic Review 32 (1991) 4, pp. 891-98
Arrow-Pratt measures of risk aversion have been defined for the univariate case. For utility functions having the same ordinal preferences, the authors extend K. J. Arrow's probability premium index to the multivariate case and obtain a unique solution that can be employed to risk-aversion...