Martin Hennig and Dieter Braun
Applied Physics Letters 87, 183901 (2005)
[Discussed in Nature Methods 3, 8-9 (2006)]
A.G. Skirtach, C. Déjugna, D. Braun, A.S. Susha, A.L. Rogach, W.J. Parak, H. Möhwald, G.B. Sukhorukov
Nano Letters 7:1371-1377 (2005)
Stefan Duhr and Dieter Braun
Applied Physics Letters 86:131921 (2005)