1. The kinetics of the formation of the nickel complex of pheophytin;Baker,1958
2. Magnesium in crude oils of Western Canada;Baker;Bull. Amer. Ass. Pet. Geol.,1959
3. A Geochemical Investigation of the Athabasca Bituminous Sands;Champlin;Preprints, Div. Pet. Chem., Amer. Chem. Soc.,1958
4. Properties of porphyrins in petroleum;Dunning;Industr. Engng. Chem.,1954
5. Determination of porphyrin aggregate in petroleum;Groennings;Analyt. Chem.,1953