M. Walter, J. Akola, O. Lopez-Acevedo, P. D. Jadzinsky, G. Calero, C. J. Ackerson, R. L. Whetten, H. Grönbeck, H. Häkkinen, Gold Superatom Complexes"A unified view of ligand-protected gold clusters as superatom complexes ", PNAS 105, 9157 (2008)
sciencemag.org
P.D. Jadzinsky, G. Calero, C.J. Ackerson, D.A. Bushnell, R.D. Kornberg, Gold Superatom Complexes Structure of a thiol monolayer-protected gold nanoparticle at 1.1 Å resolution" Science 318, 430–433 (2007)