Femtosecond ionization of magnesium clusters grown in ultracold helium dropletsT. Döppner, Th. Diederich, J. Tiggesbäumker and K. H. MeiwesBroerEur. Phys. J. D, 16 1-3 (2001) 13-16DOI: https://doi.org/10.1007/s100530170049