@article{Witmer2010,
  author    = {Lawrence M. Witmer},
  title     = {Homology of facial structures in extant archosaurs (birds and crocodilians) : with special reference to paranasal pneumaticity and nasal conchae},
  journal   = {Journal of morphology},
  number    = {225},
  pages     = {269 -- 327},
  year      = {2010},
}