1. Separation of ammonium salts of naphthenic acids from crude oil in an electric field;Agaev;Izv. Vyssh. Uchebn. Zaved., Neft Gaz,1961
2. Cation complexes of compounds containing carbon-carbon double bonds, 11. The solubility of cuprous chloride in aqueous maleic acid solutions;Andrews;J. Am, Chem. Soc,1949
3. Solid natural gas discovered;Anonymous;Ind Res.,1970
4. Chemical characteristics of fulvic acids;Black;J. Am. Water Works Assoc,1963
5. The solubility of aromatic hydrocarbons in water;Bohon;J. Am. Chem. Soc,1951