2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/86041An algebraic approach to neutron scattering on a one dimensional potentials is generalized to diffraction on three dimensional single crystals.10 pages, 5 figures. A report at XXXII-th ITEP Winter School, Moscow 16-26 Febr. 2004OpticsGeneral Physicstext