1. u. ?A Fortran Crystallographic Least-Squares Program?, August 1962, ORNL-TM-305, Contract No. W-7405-eng-26, Oak-Ridge National Laboratory, Oak-Ridge, Tennessee, operated by Union Carbide Corporation for the U.S. Atomic Energy Commission.
2. Intern. Tables for x-Ray Cryst., Vol. III, p. 202ff, Kynoch Press, Birmingham 1968.
3. Darstellung, Eigenschaften und Kristallstruktur von Na3[Yb(NH2)6]
4. Darstellung und Kristallstruktur von Na[Yb(NH2)4]