@book{ BA19877805, author = "Schaller, L. A. (Lukas A.) and Petitjean, C. (Claude)", title = "Muonic atoms and molecules", publisher = "Birkhäuser Verlag", year = "1993", series = "Monte verità : proceedings of the Centro Stefano Franscini Ascona", number = "", URL = "https://ci.nii.ac.jp/ncid/BA19877805" }