M. G.  Silveirinha and Engheta, N., ?Giant nonlinearity in zero-gap semiconductor superlattices?, Physical Review B, vol. 89, no. 8, 2014.

M. G.  Silveirinha and Engheta, N., ?Spatial Delocalization and Perfect Tunneling of Matter Waves: Electron Perfect Lens?, Physical Review Letters, vol. 110, no. 21, 2013.