1. Ultrafiltration;Aptel,1983
2. Ultrafiltration applications;Jönsson;Desalination,1990
3. Flux decline in ultrafiltration processes;van den Berg;Desalination,1990
4. Hydrophilic, porous PVDF membrane and process for its preparation;Onishi,1988
5. Permeable, porous, polymeric membrane with hydrophilic character, methods for preparing said membranes and their use;Stengaard,1987