To cite package 'ModelMap' in publications use:

Freeman, Elizabeth and Frescino, Tracey (2009). ModelMap: Modeling and Map production using Random Forest and Stochastic Gradient Boosting. USDA Forest Service, Rocky Mountain Research Station, 507 25th street, Ogden, UT, USA.

Corresponding BibTeX entry:

  @Manual{,
    title = {ModelMap: Modeling and Map production using Random Forest
      and Stochastic Gradient Boosting},
    author = {Elizabeth Freeman and Tracey Frescino},
    year = {2009},
    organization = {USDA Forest Service, Rocky Mountain Research
      Station},
    address = {507 25th street, Ogden, UT, USA},
    note = {eafreeman@fs.fed.us},
  }