@article{HigginsFloresSchurr2008,
  author    = {Steven I. Higgins and Olivier Flores and Frank Martin Schurr},
  title     = {Costs of persistence and the spread of competing seeders and sprouters},
  doi       = {10.1111/j.1365-2745.2008.01391.x},
  url       = {http://www3.interscience.wiley.com/journal/118509661/home},
  year      = {2008},
}