[1] Univ Paris Sud, CNRS, UMR 8612 Physicochim Pharmacotech Biopharm, F-92290 Chatenay Malabry, France
[2] GKSS Forschungszentrum Geesthacht GmbH, Inst Mat Res, D-21502 Geesthacht, Germany
[3] Bulgarian Acad Sci, Inst Biophys, BG-1113 Sofia, Bulgaria