This book contains a sample of Professor Tönu Puu's contributions to economic theory. The topics range from seminal results on investment criteria under imperfect capital markets and rules for optimal resource extraction when the grade of the ore is heterogeneous, to applications of modern...

Ake E.Andersson has always been intellectually on the move. He has selected his own track through the academic system and has formed a school of thought which has brought him international recognition. The cornerstones of his scie¤ntific interest are welfare analysis, regional economic dynamics...