In highly urbanized contexts a strategy for improving food provision and a sustainable use of resources is needed. In order to ensure this, specific interventions should be supported by a background analysis, deepening the potentialities of the local system in responding to urban food demand....

This paper addresses the possibility of biased estimates of the determinants of food expenditures of households eligible for the food stamp program. The source of such bias, sample partitioning, is describes and a correction procedure is utilized. For eligible nonparticipants' food expenditure...