1. Bildung einer zuckerartigen Substanz durch Synthese
2. El'piner, E., and Sokol'skaya, A. V. (1959). Origin Life Earth Rept. Intern. Symp. Moscow 1957 p. 173.
3. Synthesis of Uracil under Conditions of a Thermal Model of Prebiological Chemistry
4. “Handbook of Chemistry and Physics,”;Kerr,1962