Unternehmen müssen nicht immer Kollusionsabsichten verfolgen, wenn sie untereinander Informationen austauschen. Dieser Beitrag zeigt, daß bei Nachfrageunsicherheit auch strikt kompetitive Konkurrenten private Informationen bezüglich ihrer Nachfragebedingungen preisgeben. Dies läßt sich in...

D. Patinkin and R.W. Clower belong to the first criticists of the model IS-LM, and they have revealed its theoretical weaknesses. It was in the half of the sixties of the 20 century, i. e. at the time when there was nobody to make the effectiveness of the Keynes's policies dubious. These...

In this paper, we investigate the adequacy of scaling, a method frequently used in estimation of standard deviation of stock returns. Scaling is based on the assumption that standard deviation is proportional to the square root of the length of the time interval of the sample (for example daily,...