@MISC{10141/622179, year = {09/12/2015}, doi = {10.1371/journal.pone.0143834}, journal = {PLOS ONE}, author = {Apostolaki, NE and Rayfield, EJ and Barrett, PM}, title = {Osteological and Soft-Tissue Evidence for Pneumatization in the Cervical Column of the Ostrich (Struthio camelus) and Observations on the Vertebral Columns of Non-Volant, Semi-Volant and Semi-Aquatic Birds}, eissn = {1932-6203}, url = {http://hdl.handle.net/10141/622179} }