1. R. Côté (2005). Proc. SPIE 6014, 601415.
2. E. Brion, K. Mølmer, and M. Saffman (2007). Phys. Rev. A 76, 022334.
3. M. Weidemüller and C. Zimmermann (eds.), Cold Atoms and Molecules, Concepts, Experiments and Applications to Fundamental Physics (Wiley-VCH, Weinheim, 2009).
4. R. L. Sorochenko, in M. A. Gordon and R. L. Sorochenko (eds.), Radio Recombination Lines: 25 Years of Investigation (Kluwer, Dordrecht, 1990).
5. I. L. Beigman and V. S. Lebedev (1995). Phys. Rep. 250, 95.