@article{HaddadZielkeArrowsmithetal.2012,
  author    = {David E. Haddad and Olaf Zielke and J. Ramon Arrowsmith and Matthew D. Purvance and Amanda G. Haddad and Angela Landgraf},
  title     = {Estimating two-dimensional static stabilities and geomorphic settings of precariously balanced rocks from unconstrained digital photographs},
  journal   = {Geosphere},
  volume    = {8},
  number    = {5},
  pages     = {1042 -- 1053},
  doi       = {10.1130/GES00788.1},
  year      = {2012},
}