provides an empirical analysis on how individuals' relative income position affects their performance. Using a unique data set … income differences within a team, the worse the performance of the soccer players is. The more the players are integrated in …

simultaneous analysis of different energy goods and uses household data from 1973 to 1995. Our objective is to obtain in depth …. Although the model used is able to reproduce any type of price change, we illustrate the paper with an actual simulation of the …