1. Aber, J. D., Nadelhoffer, K. J., Steudler, P., & Melillo, J. M. (1989). Nitrogen saturation in northern forest ecosystems. Bioscience, 39, 378–386.
2. Aber, J., McDowell, W., Nadelhoffer, K., Magill, A., Berntson, G., Kamakea, M., McNulty, S., Currie, W., Rustad, L., & Fernandez, I. (1998). Nitrogen saturation in temperate forest ecosystems. Bioscience, 48, 921–934.
3. Aber, J. D., Goodale, C. L., Ollinger, S. V., Smith, M.-L., Magill, A. H., Martin, M. E., Hallett, R. A., & Stoddard, J. L. (2003). Is nitrogen deposition altering the nitrogen status of northeastern forests? Bioscience, 53, 375–389.
4. Adams, M. B., Angradi, T. R., & Kochenderfer, J. N. (1997). Stream water and soil solution responses to 5 years of nitrogen and sulfur additions at the Fernow Experimental Forest, West Virginia. Forest Ecology and Management, 95, 79–91.
5. Adams, M. B., Schiller T. M., Ford W. M., Kochenderfer J. N. (2003). Large woody debris in a second-growth central Appalachian hardwood stand: Volume, composition, and dynamics. In J.W. Van Sambeek, J.O. Dawson, F. Ponder, Jr, E.F. Loewenstein, and J.S. Fralish (Eds), Proceedings, 13th central hardwood forest conference. (p. 237-245.) USDA Forest Service, GTR NC-234.