IAEA

Haider, K., Nagar, B. R., Saiz-Jimenez, C., Meuzelaar, H. L. C., & Martin, J. P. (1977). Studies on Soil Humic Compounds, Fungal Melanins and Model Polymers by Pyrolysis Mass-Spectrometry. In Soil Organic Matter Studies : vol. 2 (pp. 213–220).