About non-Gaussian behaviour of the Debye-Waller factor at large scattering vectorsI. D. Feranchuk, A. A. Minkevich and A. P. UlyanenkovEur. Phys. J. Appl. Phys., 24 1 (2003) 21-26DOI: https://doi.org/10.1051/epjap:2003058