@article {812506,
	title = {Enhanced Nonlinear Refractive Index in ϵ-Near-Zero Materials},
	journal = {Physical Review Letters},
	year = {2016},
	url = {http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.233901},
	author = {L. Caspani and R. P. M. Kaipurath and M. Clerici and M. Ferrera and T. Roger and Kim, J. and N. Kinsey and M. Pietrzyk and A. Di Falco and V. M. Shalaev and A. Boltasseva and D. Faccio}
}
