1. Thermal aspects of chlorophyll geochemistry;Baker,1983
2. Mass spectrometry of porphyrins—II. Characterisation of petroporphyrins;Baker;J. Am. Chem. Soc.,1967
3. Use in porphyrins as a maturity parameter for oils and sediments;Barwise;Geol. Soc. Mtng,1982
4. Petroporphyrin fingerprinting as a geochemical marker;Barwise,1983
5. Separation and structure of petroporphyrins;Barwise,1980