1. “Humic Substances in Soil, Sediment and Water”;Aiken,1985
2. “Methods in Applied Soil Microbiology and Biochemistry”;Alef,1995
3. “Introduction to Soil Microbiology”;Alexander,1961
4. “Microbiology: Fundamentals and Application”;Atlas,1984
5. Prebiotic soup—revisiting the Miller experiment;Bada;Science,2003