1. V. Trepakov, M. Savinov, O. Okhay, A. Tkach, P.M. Vilarinho, A.L. Kholkin, I. Gregora, L. Jastrabík
    Dielectric permittivity and Cr3+ impurity ion probe luminescence in SrTiO3 sol-gel ceramics
    Journal of the European Ceramic Society 27 (2007) 3705-3707.
  2. V. N. Sigaev, S. V. Lotarev, E. V. Orlova, S. Y. Stefanovich, P. Pernice, A. Aronne, E. Fanelli, I. Gregora
    Lanthanum Borogermanate Glass-Based Active Dielectrics
    Journal of Non-Crystalline Solids 353 (2007) 1956-1960.
  3. J. Petzelt, T. Ostapčuk, I. Gregora, P. Kužel, J. Liu, Z. Shen
    Infrared and Raman studies of the dead grain-boundary layers in SrTiO3 fine-grain ceramics
    Journal of Physics: Condensed Matter 19 (2007) 196222(1)-196222(16).
  4. S. Frank, C. A. Kuntscher, I. Gregora, J. Petzelt, T. Yamauchi, Y. Ueda
    Pressure-Induced changes in the optical properties of beta-Na0.33V2O5
    Physical Review B 76 (2007) 075128(1)-075128(6).
  5. J. Hlinka, I. Gregora, C. Hérold, N. Emery, J. F. Marêché, P. Lagrange
    Lattice dynamics of CaC6 by Raman spectroscopy
    Physical Review B 76 (2007) 1445129(1)-1445129(6).
  6. J. A. Moreira, A. Almeida, M. R. Chaves, M. L. Santos, P. P. Alferes, I. Gregora
    Raman spectroscopic study of the phase transitions and pseudo-spin phonon coupling in sodium ammonium sulphate dihydrate
    Physical Review B 76 (2007) 174102(1)-174102(16).
  7. I. Gregora, J. Hlinka, V. Vorlíček
    Wanted: Amplitudon mode in Raman spectra of BCCD
    Ferroelectrics 240 (2000) 1383-1390.