To cite ShapeSelectForest in publications use:

  Gretchen G. Moisen, Mary C. Meyer, Todd A. Schroeder, Xiyue Liao,
  Karen G. Schleeweis, Elizabeth A. Freeman, and Chris Toney (2016).
  Shape Selection in Landsat Time Series: A Tool for Monitoring Forest
  Dynamics. Global Change Biology 22(10), 3518-3528.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Shape Selection in Landsat Time Series: A Tool for Monitoring Forest Dynamics},
    author = {Gretchen G. Moisen and Mary C. Meyer and Todd A. Schroeder and Xiyue Liao and Karen G. Schleeweis and Elizabeth A. Freeman and Chris Toney},
    journal = {Global Change Biology},
    year = {2016},
    volume = {22},
    number = {10},
    pages = {3518--3528},
  }