This paper aims at explaining observed distinct prices announced by a single supplier for an identical product, in an illegal framework. The modeling proposed here examines an augmented mark-up pricing equation for oligopolistic markets that includes a function of social discrimination. The...

The purpose of this article is to construct a Keynesian model which integrates the informal economy, based on a short-term analysis. From a structural system of 23 equations, we propose a simple modeling that allows for an assessment of the impact of illegal activities on the major macroeconomic...

This paper describes a two-sector demo-economic model (agricultural and non-agricultural sectors) applied to Europe and spanning the period from the neolithic agricultural revolution to the Industrial Revolution. The model describes the "incessant contest" between population growth and food...