@article{EccardFeyCaspersetal.2011,
  author    = {Jana Eccard and Karen Fey and Barbara A. Caspers and Hannu Yl{\"o}nen},
  title     = {Breeding state and season affect interspecific interaction types indirect resource competition and direct interference},
  journal   = {Oecologia},
  volume    = {167},
  number    = {3},
  pages     = {623 -- 633},
  doi       = {10.1007/s00442-011-2008-y},
  year      = {2011},
}