| Reference |
P.A. Schenck, J.W. de Leeuw, G. van Graas, J.R. Haverkamp and M. Bouman: Analysis of Recent Spores and Pollen and of Thermally Altered Sporopollenin by Flash Pyrolysis Mass Spectrometry and Flash Pyrolysis Gas Chromatography Mass Spectrometry In: Org. Maturation studies and Fossil Fuel Exploration, , 1981. - pp. 225-237 |
