//-->
ECOLOGICAL ECONOMIC MODELLING OF THE CONSERVATION OF THREATENED HABITATS: HEATHER MOORLAND IN THE NORTHERN ISLES OF SCOTLAND
Hanley, Nick, (1995)
ECONOMIC INSTRUMENTS AND WASTE MINIMIZATION: THE NEED FOR DISCARD- AND PURCHASE-RELEVANT INSTRUMENTS
Fenton, R., (1994)
Discussion Paper in Ecological Economics
Spash, Clive L., (1994)