7. Wijmans JG, Smolders CAPreparation of symmetric membranes by the phase inversion process in Synthetic Membranes. Science, Engineering and Applications, H.K.Londsdale and M.H.Pinho, Editors, Reidel, Dordrecht, 36 (1986)
8. Ryu JB, Song K, Kim SS, Polym.(Korea), 24(3), 342 (2000)
9. Kim BT, Song KG, Kim SS, Polym.(Korea), 10, 127 (2002)