1. Mass Spectrometry Laboratory, University of Liège, MolSys Research unit, Quartier Agora, Allée du Six Aout 11, B-4000 Liège, Belgium
2. Luxembourg Institute of Science and Technology − LIST, Materials Research & Technology MRT Department, L-4422 Belvaux, Luxembourg
3. Aerospace & Mechanical Engineering Department, Computer-aided Geometric Design, University of Liège, B-4000 Liège, Belgium