1. Lukáš, P., Mikula, P., Kulda, J. and Eichhorn, F., Czech. J. Phys.B37 (1987) 993.
2. Kulda J. et al., Nucl. Inst. Meth., to be published.
3. Bonse, U., PhysicaB151 (1988) 7.
4. Sears, V. F. in: Methods of Exp. Physics Vol. 23A, “Neutron Diffraction”. New York: Academic Press, 1986: p. 521.
5. Mughabghab, S. F., Neutron Cross-Sections, Vol. I B, New York a. o.: Academic Press, 1984.