Dowrick, Steve; Quiggin, John - In: American Economic Review 87 (1997) 1, pp. 41-64
Widely used 'purchasing power parity' comparisons of per capital GDP are not true quantity indexes and are subject to systematic substitution bias. This bias may distort measurement of convergence and divergence. Extending Hal R. Varian's nonparametric construction of a true index gives the set...
