Deegan L.A., Bowen J.L., Drake D.C., Fleeger J.W., Friedrichs C.T., Galván K.A., Hobbie J.E., Hopkinson C., Johnson D.S., Johnson J.M. et al..  2007.  Susceptibility of salt marshes to nutrient enrichment and predator removal. Ecological Applications. 17:S-42-S63.

Pontius, Jr. R.G., Claessens L., Hopkinson C., Marzouk A., Rastetter E.B., Schneider L.C., Vallino J..  2000.  Scenarios of land-use change and nitrogen release in the Ipswich watershed, Massachusetts, USA. Proceedings of the 4th International Conference on Integrating Geographic Information Systems and Environmental Modeling: Problems, prospects, and Needs for Research. 

Perring A., Williams M., C. Jr. H, Rastetter E., Vallino J..  2000.  Solute dynamics in storm flow of the Ipswich River Basin: Effects of land use.. Biological Bulletin. 199:219-221.