Sykes A., 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, 021601 (2014).
Wang Y., J.P. D'Incao, and B.D. Esry, in Advances In Atomic, Molecular, And Optical Physics (Elsevier, 2013), pp. 1-115.