On the existence of an approximate representative household : a contribution to the aggregation problem and to the theory of linear expenditure systems

A general demand system or: utility maximization and the representative household or cost minimization and the representative firm als approximations

Krelle, Wilhelm, (1981)

Cephoids: Minkowski sums of prisms

Pallaschke, Diethard, (2004)

Computing the Minkowski sum of prisms

Pallaschke, Diethard, (2005)