@unpublished{publication-5777, author={Falk, Armin}, institution={University of Zurich}, issn={1424-0459}, number={No. 79}, series={Working paper series / Institute for Empirical Research in Economics}, title={Homo Oeconomicus Versus Homo Reciprocans: Ans{\"a}tze f{\"u}r ein Neues Wirtschaftspolitisches Leitbild?}, year=2001, }