The question of the validity of the "so called" Kondratieff's theory of long waves has been a well-known controversial issue among historians, economic, social and political science scholars. In this work, the author analyses its consistency and cycles general framework investigating both...

In June 2010 Professor Dr. Norbert Koubek gave his valedictory lecture. He retired after four decades in the Department of Business and Economics at the University of Wuppertal. In his lecture “Light and its economic consequences as a fundamental phenomenon” Professor Dr. Norbert Koubek...