Journal Article
                        
                        Parham Jr, Thomas L, Cinzia  Cervato, William A Gallus Jr, Michael  Larsen, Jon  Hobbs, Pete  Stelling, Thomas  Greenbowe, Tanya  Gupta, John A Knox, and Thomas E Gill.  
"The InVEST volcanic concept survey: Exploring student understanding about volcanoes." Journal of Geoscience Education 58, no. 3 (2010): 177-187.