1. Nanofiltration extends the range of membrane filtration;Eriksson;Environmental Progress,1988
2. Membrane softening: a treatment process comes of age;Conlon;Journal of American Water Works Association,1989
3. Dow Chemical Co FILMTEC membranes: nanofiltration produces sparkling clean water for Swedish resort community http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_0047/0901b803800478f5.pdf?filepath=liquidseps/pdfs/noreg/609-00379.pdf&fromPage=GetDoc
4. Nanofiltration