1. Boetger H, Doty P (1958) J Phys Chem 58:1246
2. Pezron I, Herning T, Djabourov M, Leblond J (1990) In: Burchard W, Ross-Murphy SB (eds) Physical networks, polymers and gels. Elsevier, London, p 231
3. Bohidar HB (1998) Int J Biol Macromol 23:1
4. Pouradier J, Venet AM (1950) J Chim Phys Phys-Chim Biol 47:391
5. Borchard W, Keese A (1979) 26th IUPAC symposium on macromolecules, Mainz, Germany, vol II, p 888