@article {15710,
	title = {High nonlinear optical anisotropy of urea nanofibers},
	journal = {EPL (Europhysics Letters)},
	volume = {91},
	year = {2010},
	month = {2010-09-14},
	pages = {28007},
	author = {Isakov, D. and de Matos Gomes, E. and Belsley, M. S. and Almeida, B. and Martins, A. and Neves, N. M. and Reis, R. L.}
}
