<title>Application of hyper-Raman spectroscopy in the study of bulk materials</title>

In this review an independent method of vibrational spectroscopy, the spectroscopy of hyper- Raman scattering, is presented. The method was essentially developed and applied to study a number of physical problems. Some new possibilities for the study of material properties are demonstrated. This method is useful for the investigation of centrosymmetric and noncentrosymmetric crystals, glasses, liquids and gases at any conditions and under various external actions.