S.  Biffi, Petrizza, L., Rampazzo, E., Voltan, R., Sgarzi, M., Garrovo, C., Prodi, L., Andolfi, L., Agnoletto, C., Zauli, G., and Secchiero, P., ?Multiple dye-doped NIR-emitting silica nanoparticles for both flow cytometry and in vivo imaging?, Rsc Advances, vol. 4, pp. 18278?18285, 2014.