Measurement of the 1s-2s energy interval in muonium (Phys.Rev.Lett., 1999)

(untitled) - Meyer, V; Bagayev, SN; Baird, P; Bakule, P; Boshier, MG; Breitrueck, A; Cornish, S; Dychkov, S; Eaton, G; Grossmann, A; Huebl, D; Hughes, V; et al.