[American Society of Civil Engineers World Environmental and Water Resources Congress 2009 - Kansas City, Missouri, United States (May 17-21, 2009)] World Environmental and Water Resources Congress 2009 - Permitting of Confined Animal Feeding Operations: Issues and ChallengesRitter, William F.; Chitikela, S. Rao · 2009

[American Society of Civil Engineers World Environmental and Water Resources Congress 2007 - Tampa, Florida, United States (May 15-19, 2007)] World Environmental and Water Resources Congress 2007 - Modeling Ammonia and Odor Emissions from Livestock and Poultry Facilities: A ReviewRitter, William F.; Chitikela, S. Rao · 2007

[American Society of Civil Engineers World Environmental and Water Resources Congress 2014 - Portland, Oregon (June 1-5, 2014)] World Environmental and Water Resources Congress 2014 - Greenhouse Gas Emissions from Wastewater Treatment Plants and By-Product Operations—A Comprehensive ReviewRitter, William F.; Chitikela, S. Rao · 2014

[American Society of Civil Engineers World Environmental and Water Resources Congress 2019 - Pittsburgh, Pennsylvania (May 19–23, 2019)] World Environmental and Water Resources Congress 2019 - The Mississippi River Basin Phosphorus Problem: Past History and Future Challenges to Solve ItRitter, William F.; Chitikela, S. Rao