The paper introduces a class of distances to stable equivalent, which monotonically decrease to zero as a population moves to stability. Kullback distance expected earlier to be a unique measure of such types turns to be a specimen of this class. It is shown that the very feature of monotonic...

We exploit a multistate generalisation of a classical, one-sex, stable population model to evaluate structural and long-term effects of changes in the attainment of adulthood. The demographic framework that inspired this paper is provided by Italy, where a strong delay in the transition to...