Close encounters between two nanoshells

1. Lassiter, J.B.
2. Aizpurua, J.
3. Hernandez, L.I.
4. Brandl, D.W.
5. Romero, I.
6. Lal, S.
7. Hafner, J.H.
8. Nordlander, P.
9. Hales, N.R.