9[11]HANS-PETER RITCK.Process for the preparation of crystalline sodium silicates:US,4585642[P].1986-04-29.
10[13]Matsumura S.Builder performance in detergent formulations and biodegradability dicarboxylated cellulose and amylose containing sugar residues in the backbone[J].Angew Makromol Chem.1993,(205):117-129.