Toennies, J. P. Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;
Farnik, M., & Toennies, J. P. (2005). Ion-molecule reactions in 4He droplets: Flying nano-cryo-reactors. Journal of Chemical Physics, 122(1): 014307, pp. 014307-1-014307-11.