1. W.D. Lamb, Light Met. 1979, 889 (1979).
2. N. Tjahyono, Y. Gao, D. Wong, W. Zhang, and M.P. Taylor, Light Met. 2011, 301 (2011).
3. A.V. Mikhonin, N.R. Dando, and M. Gershenzon, Light Met. 2013, 905 (2013).
4. S.O. Strømmen, E. Bjørnstad, and G. Wedde, Light Met. 2000, 351 (2000).
5. S.J. Lindsay, N.R. Dando, and S. Broek, Light Met. 2017, 487 (2017).