Gabriela Frei, Arne Zilian, Andrea Raselli, Hans U. Güdel and Hans-Beat Bürgi
Structure and Optical Spectroscopy of [Rh(2-phenylpyridine)₂(2,2'-bipyridine)]PF₆ and related Complexes
Inorg. Chem. 31, 4766-4773 (1992)                       

Gabriela Frei, Mirco G. Colombo and H. U. Güdel
High-Resolution Optical Spectroscopy of Coordination Compounds,
in "Perspectives in Coordination Chemistry";
Eds. A. F. Williams, C. Floriani, A. E. Merbach;
Verlag Helv. Chim. Acta, Basel, 183-201 (1992)           

C. M. P. Giesbergen, R. Sitters, M. Glasbeek, G. Frei, A. Zilian and H. U. Güdel
Excitation Localization in Mixed Rhodium-Chelates
Chem. Phys. Lett. 197, 451-456 (1992)           

Arne Zilian, Gabriela Frei and Hans U. Güdel
High-Resolution Laser Spectroscopy of Cyclometalated Rh(III)-Thienylpyridine Complexes
Chem. Physics 173, 513-523 (1993)           

Alberto Juris, Vincenzo Balzani, Sebastiano Campagna, Gianfranco Denti, Scolastica Serroni, Gabriela Frei and Hans U. Güdel
Near Infrared Luminescence of Supramolecular Species made of Os(II) and/or Ru(II)-polypyridine Components
Inorg. Chem. 33, 1491-1496 (1994)           

C. M. P. Giesbergen, C. Terletski, G. Frei, H. U. Güdel and M. Glasbeek
Optically Detected Magnetic Resonance Spectroscopy of Rhodium(III) Mixed-Chelate Complexes
Chem. Phys. Lett. 213, 597-602 (1993)           

Markus P. Hehlen, Gabriela Frei and Hans U. Güdel
Dynamics of Infrared-to-Visible Upconversion in Cs₃Lu₂Br₉: 1% Er³⁺
Phys. Rev. B 50, 16264-16273 (1994)           

C. M. P. Giesbergen, R. Middelhoek, G. Frei, H. U. Güdel and M. Glasbeek
Picosecond Studies of Energy Transfer in Photo-Excited Mixed Organometal Chelates
J. Phys. Chem. 99, 8177-8181 (1995)           

P. Mikhail, K. Ramseyer, G. Frei, F. Budde and J. Hulliger
Bleaching of Sm²⁺ during photoluminescence and cathodoluminescence
Optics Communications 188, 111-117 (2001)           

Karl W. Krämer, Daniel Biner, Gabriela Frei, Hans U. Güdel, Markus P. Hehlen and Stefan R. Lüthi
Hexagonal Sodium Yttrium Fluoride Based Green and Blue Emitting Upconversion Phosphors
Chem. Mater. 16, 1244-1251 (2004)      Abstract           

Chenyi Yi, Carmen Blum, Shi-Xia Liu, Gabriela Frei, Antonia Neels, Philippe Renaud, Samuel Leutwyler and Silvio Decurtins
An Efficient and Facile Synthesis of Highly Substituted 2,6-Dicyanoanilines
J. Org. Chem. 73, 3596-3599 (2008)