1 M.-G.. Hu, M.J. Van de Graaff, D.. Kedar, J.P. Corson, E.A. Cornell, and D.S. Jin, Physical Review Letters 117, (2016).
1 A.. Sykes, J.P. Corson, J.P. D’Incao, A.P. Koller, C.H. Greene, A.M.. Rey, K.R.A. Hazzard, and J.L. Bohn, Physical Review A 89, (2014).