Photoacoustic spectra of Zn1-xBexTe near the energy gapD. M. Todorović, J. Zakrzewski, M. Maliński, T. Grozdić and F. FirsztEur. Phys. J. Special Topics, 153 (2008) 263-266DOI: https://doi.org/10.1140/epjst/e2008-0441-5