Service Path Attribution Networks (SPANs): Spatially Quantifying the Flow of Ecosystem Services from Landscapes to People. - Gary W. Johnson; Kenneth J. Bagstad; Robert R. Snapp; Ferdinando Villa (ICCSA (1), 2010)

Service Path Attribution Networks (SPANs): A Network Flow Approach to Ecosystem Service Assessment. - Gary W. Johnson; Kenneth J. Bagstad; Robert R. Snapp; Ferdinando Villa (Int. J. Agric. Environ. Inf. Syst., 2012)

Assessing the Accuracy and Potential for Improvement of the National Land Cover Database's Tree Canopy Cover Dataset in Urban Areas of the Conterminous United States. - Mehdi Pourpeikari Heris; Kenneth J. Bagstad; Austin Troy; Jarlath P. M. O'Neil-Dunne (Remote. Sens., 2022)