@article {phamenhanced2012,
	title = {Enhanced metrology using preferential orientation of nitrogen-vacancy centers in diamond},
	journal = {Physical Review B},
	volume = {86},
	year = {2012},
	publisher = {{APS}},
	author = {Pham, L and Bar-Gill, N and Le Sage, D and Belthangady, C and Stacey, A and Markham, M and Twitchen, D and Lukin, M and Walsworth, R}
}
