المؤلفون: Likens, G. E., Tartowski, S. L., Berger, T. W., Richey, D. G., Driscoll, C. T., Frank, H. G., Klein, A.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1997 Apr . 94(9), 4499-4503.

URL الوصول: https://www.jstor.org/stable/42039

المؤلفون: Tartowski, S. L., Allen, E. B., Barrett, N. E., Berkowitz, A. R., Colwell, R. K., Groffman, P. M., Harte, J., Possingham, H. P., Pringle, C. M., Strayer, D. L., Tracy, C. R.

المساهمون: Pickett, S. T. A., editor^Aff1, Ostfeld, R. S., editor^Aff1, Shachak, M., editor^{Aff1, Aff2}, Likens, G. E., editor^Aff1

المصدر: The Ecological Basis of Conservation : Heterogeneity, Ecosystems, and Biodiversity. :187-192