1. Separation of acid or alkali by diffusion dialysis with ion exchange resin membrane;Kurokawa;Jpn. Kokai Tokkyo Koho,1976
2. Isolation of acid;Ihara;Jpn. Kokai Tokkyo Koho,1977
3. Application of the ion-exchange membranes — acids recovery by diffusion dialysis;Yasutoshi,1986
4. Treatment of residual liquor from electrowinning of zinc;Miyao;Jpn. Kokai Tokkyo Koho,1979