1. Principles of Optics;Born,1999
2. Interplay of physical structure and photophysics for a liquid crystalline polyfluorene;Grell;Macromolecules,1999
3. Gruber, D.P., 2001. Electromagnetic modelling of semiconducting bi-layers for photovoltaic applications. Report, SFB Elektroaktiver Stoffe, University of Technology, Graz.
4. Gruber, D.P., 2002. Optimization of the light absorption in organic photovoltaic devices. Report, Friedrich Schiedel Stiftung für Energietechnik, Wien.
5. Gruber, D.P., 2003. Minimization of the light reflection of organic photovoltaic devices by structured surfaces. Doctoral theses, Institute for Theoretical Physics, University of Technology, Graz.