Ensanya A. Abou Neel, Wojciech Chrzanowski, David M. Pickup, Luke A. O'Dell, Nicola J. Mordan, Robert J. Newport, Mark E. Smith, Jonathan C. Knowles
J R Soc Interface. 2009 May 6; 6(34): 435–446. Published online 2008 Sep 30. doi: 10.1098/rsif.2008.0348