@article {25304,
	title = {Giant refraction across the entire visible spectrum in perovskites},
	journal = {Nature Photonics},
	volume = {12},
	number = {734},
	year = {2018},
	author = {Di Mei, F. and Falsi L. and Flammini, M. and Pierangeli, D and Di Porto, P and Agranat, A.J. and DelRe, E.}
}
