By limiting the scope for substitution between commodities, other things equal quantity constraints raise the cost of living. Thus, rationed families have higher povery lines than unconstrained ones. This heterogeneity in both resources and poverty lines means that, in principle, bivariate...

Some recent empirical findings suggest that there are intrinsic links between the statistical regularities regarding cohort survival patterns, the persistence of firm turnover, and shakeout during an industry life-cycle. This paper presents a theoretical model which explains these regularities...