We build a principal-agent model to analyze the firm's decision to adopt an environmental management system (EMS) and the EMS type, either informal (I) or standardized (S), such as ISO 14001. Our results are consistent with empirical evidence in several respects. A standardized EMS increases the...

Optimal capacity and location of a sequence of landfills are studied, and the interactions between both decisions are pointed out. The decision capacity has some spatial implications, because it affects the feasible region for the rest of landfills, and some temporal implications, because the...