Here is a link to a report on the use of economic incentives for pollution control in the US. You can use the "quick links" on the right to navigate the document.
Environmental Defense Fund has a short piece on how the use of incentives was a powerful solution to addressing acid rain.
The Environmental Literacy Council has a nice short article on standards vs. incentives.
Here's more from the World Bank.
Here is a short article on economic incentives for water quality management from the WHO.
Here is a great article by Robert Stavins on the topic.
Lots of great information in this report on Economic Incentives for Pollution Control from UNEP.