Family allowances as welfare improvements Bernhard FeldererKlaus Ritzberger OriginalPaper Pages: 11 - 33
A Kolmogoroff generalized predator-prey model of Goodwin's growth cycle Mario C. Sportelli OriginalPaper Pages: 35 - 64
The economics of harvesting predator-prey systems Wolfgang J. StröbeleHolger Wacker OriginalPaper Pages: 65 - 81