Elasticity of hollow polyelectrolyte capsules prepared by the layer-by-layer technique C. Gao, E. Donath, S. Moya, V. Dudnik and H. Möhwald Eur. Phys. J. E, 5 1 (2001) 21-27 Published online: 15 May 2001 DOI: 10.1007/s101890170083