1. Thermal Decomposition of Iron(II) Sulfates
2. Anwendungen der Schwingungsspektroskopie in der Anorganische Chemie;Siebert,1966
3. Density of the Lunar Surface
4. BURAS B., STAUN OLSEN J., LINDEGAARD ANDERSEN A., GERWARD L. and SELSMARK B., Monograph No. 73-12, Physical Laboratory II, H.C. Ørsted Institute University of Copenhagen, and Report No. 4, Lab. of Applied Physics III, Technical University of Denmark (1973).