1. Resin impregnates: the current position;Flett;Chem. Ind. (London),1977
2. ISEC'90;Villaescusa,1991
3. ISEC'90;Cortina,1991
4. Polystyrene impregnated with ethers;Warshawsky,1974
5. Separation of gold from acidic leach liquors with Amberlite XAD-7;Edwards,1976