Environmental Problems in Karst Lands
- Brief review of the engineering and environmental concerns of occupying karst terrain, including mitigation measures.
- http://www.prenhall.com/divisions/esm/app/nebel/html/updates/update13.html

Sinkholes in Pennsylvania
- Educational booklet by William E. Kochanov, issued by the Pennsylvania Geological Survey, explains sinkhole formation in carbonate bedrock terrain and problems that can result from human activities in areas of karst topography.
- http://www.dcnr.state.pa.us/topogeo/hazards/es11.pdf

Karst: The Stealthy Hazard
- Illustrated article (in Geotimes) discusses flooding, sinkhole collapse, infrastructure damage, and other impacts from development on karst lands in Kentucky.
- http://www.geotimes.org/may01/feature2.html