Groffman, P. M., Baron, J. S., Blett, T., Gold, A. J., Goodman, I., Gunderson, L. H., … Peterson, G. D. (2006). Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application? Ecosystems., 9(1), 1–13. https://doi.org/10.1007/s10021-003-0142-z

Groffman, P. M., J. S. Baron, T. Blett, A. J. Gold, I. Goodman, L. H. Gunderson, B. M. Levinson, M. A. Palmer, H. W. Paerl, and G. D. Peterson. “Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application?” Ecosystems. 9, no. 1 (February 2006): 1–13. https://doi.org/10.1007/s10021-003-0142-z.

Groffman PM, Baron JS, Blett T, Gold AJ, Goodman I, Gunderson LH, et al. Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application? Ecosystems. 2006 Feb;9(1):1–13.

Groffman, P. M., et al. “Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application?” Ecosystems., vol. 9, no. 1, Feb. 2006, pp. 1–13. Epmc, doi:10.1007/s10021-003-0142-z.

Groffman PM, Baron JS, Blett T, Gold AJ, Goodman I, Gunderson LH, Levinson BM, Palmer MA, Paerl HW, Peterson GD. Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application? Ecosystems. 2006 Feb;9(1):1–13.