Finnefrock Adam C., Ulrich Ralph, Du Chesne Alexander, Honeker Christian C., Schumacher Kai, Unger Klaus K., Gruner Sol M., Wiesner Ulrich
Physics Department, Cornell University Clark Hall, Ithaca, NY 14853-2501 (USA).
Angew Chem Int Ed Engl. 2001 Apr 1;40(7):1207-1211. doi: 10.1002/1521-3773(20010401)40:7<1207::aid-anie1207>3.0.co;2-s.