Rogers, Andrei; Willekens, Frans; Raymer, James; … - In: Papers in Regional Science 81 (2002) 1, pp. 29-48
The age structure of a population is a fundamental concept in demography and is generally depicted in the form of an age pyramid. The spatial structure of an interregional system of origin-destination-specific migration streams is, however, a notion lacking a widely accepted definition. We offer...