1. E. J. Bulten and G. J. M. Kerk, New uses for Germanium, 51–62 (1974).
2. J. S. Thayer, J. Organomet. Chem.,76, No. 3, 265–295 (1974).
3. W. N. Aldridge, Rev. Silicon, Germanium, Tin and Lead Compounds, Spec. Issue, M. Gielen, Israel (1978), pp. 9–30.
4. K. Asai, Organic Germanium a Medical Godsend, Kogakusha, Tokyo (1977).
5. K. Asai, Miracle Cure Organic Germanium, Japan Publ., Tokyo (1980).