DOI: 10.1642/0004-8038(2004)121[http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1642%2F0004-8038%282004%29121%5B0847%3AAGMPOT%5D2.0.CO%3B2 HTML abstract*Collinson, M. (2006): Splitting headaches?
DOI: 10.1642/0004-8038(2004)121[http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1642%2F0004-8038%282004%29121%5B0847%3AAGMPOT%5D2.0.CO%3B2 HTML abstract* Collinson, M. (2006): Splitting headaches?