Sutter, Matthias Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://homepage.uibk.ac.at/~c40421/abstracts/cejor.html (Any fulltext)
Haas, D., Kocher, M., & Sutter, M. (2004). Measuring efficiency of German football teams by Data Envelopment Analysis. Central European Journal of Operations Research, 12, 251-268.