Journal article (2008) - S de Schiller (author), GM Tino (author), L Lusanna (author), H Klein (author), H Margolis (author), P Lemonde (author), P Laurent (author), G Santarelli (author), A Clairon (author), W Ertmer (author), E Rasel (author), J. Müller (author), C Salomon (author), L Lorio (author), C Lämmerzahl (author), H Dittus (author), E.K.A. Gill (author), Eberhard Gill (author), M Rothacher (author), F Flechner (author), U Schreiber (author), V Flambaum (author), W-T Ni (author), L Liu (author), U Sterr (author), X Chen (author), J'extern' Chen (author), K Gao (author), L Cacciapuoti (author), R Holzwarth (author), MP Heß (author), W Schä fer (author), E Peik (author), A Nevsky (author), A Gorlitz (author), D. Svehla (author), G Ferrari (author), N Poli (author)