1994 • Rivers of Change: Essays on Early Agriculture in Eastern North America. Bruce D. Smith. Smithsonian Institution Press, Washington, D.C., 1992. xiv + 302 pp., figures, tables, literature cited, index. $49.95 (cloth).

  • Popularity: This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
  • Influence: This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
  • Citation Count: This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
  • Impulse: This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.