High frequency intrinsic localized modes in solids: an example of metallic NiHižnjakov, Vladimir; Haas, Mati; Klopov, Mihhail; Šelkan, AleksanderBook of abstracts. Programme : 3rd Bilateral Estonian-German Workshop “Strong Nonlinear Vibronic and Electronic Interactions in Solids” : Cottbus, Germany, June 13-15, 20112011 / p. 39