1. Hartwick's rule in open economies;Asheim;Can. J. Econ.,1986
2. GAMS. A User Guide;Brooke,1992
3. Natural resource depletion and national income accounting;Devarajan,1991
4. What's economic about the economic cost of soil erosion to Canadian farmers?;Fox,1988
5. Value and Capital. An Inquiry into Some Fundamental Principles of Economic Theory;Hicks,1946