1. Liquid pertraction or liquid membranes-state of the art;Boyadzhiev;Sep. Sci. Technol.,1990
2. Liquid membranes: theory and applications;Noble,1987
3. Liquid Membranes: Chemical Application;Araki,1990
4. Application of a liquid membrane for copper recycling;O'Hara,1986
5. Study of creeping film pertraction;Boyadzhiev,1987