@article {ahmadi2017observation,
	title = {Observation of the hyperfine spectrum of antihydrogen},
	journal = {Nature},
	volume = {548},
	number = {7665},
	year = {2017},
	pages = {66},
	publisher = {Nature Publishing Group},
	author = {Ahmadi, M and Alves, BXR and Baker, CJ and Bertsche, W and Butler, E and Capra, A and Carruth, C and Cesar, CL and Charlton, M and Cohen, S and others}
}
