@article {Machado:2018ge, title = {{High-precision measurements of $n=2\rightarrow n=1$ transition energies and level widths in He- and Be-like argon ions}}, journal = {Phys. Rev.}, volume = {97}, number = {3}, year = {2018}, note = {n/a}, pages = {032517}, abstract = {n/a}, author = {Machado, J and Szabo, C. I. and J P Santos and P Amaro and M Guerra and Gumberidze, A. and Bian, Guojie and Isac, J. M. and P. Indelicato} }