Detecting columnar deformations in a supermesogenic octapode by proton NMR relaxometry A. Van-Quynh, P. J. Sebastião, D. A. Wilson and G. H. Mehl Eur. Phys. J. E, 31 3 (2010) 275-283 Published online: 19 March 2010 DOI: 10.1140/epje/i2010-10575-5