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External debt dynamics and debt cycles : the role of the discount rate
Semmler, Willi, (1998)
Some economic aspects of biodiversity
Müller, Herbert, (1997)
Integrating biodiversity indices into a multi-species optimal control model
Bertram, Christine, (2010)
On conservation of renewable resources with stock-dependent return and non-concave production
Olson, Lars J., (1994)
On conservation of renewable resources with stock-dependent return and nonconcave production
Olson, Lars J., (1996)
The economics of controlling a stochastic biological invasion
Olson, Lars J., (2002)