1. CFisUC, Department of Physics, University of Coimbra, Coimbra, Portugal.
2. Department of Physics, SUPA, University of Strathclyde, Glasgow, UK.
3. Department of Experimental Physics, Ural Federal University, Ekaterinburg, Russia.
4. Institute of Solid State Chemistry of the Urals branch of the RAS, Ekaterinburg, Russia.
5. Laboratory for Muon Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland.