Marco Peres, Sérgio Magalhães, Vincent Fellmann, Bruno Daudin, Armando J Neves, Eduardo Alves, Katharina Lorenz and Teresa Monteiro*
* Corresponding author: Teresa Monteiro tita@ua.pt
Nanoscale Research Letters 2011, 6:378 doi:10.1186/1556-276X-6-378
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