1. Attwood D, Florance, AT (1982) In: Attwood D, Florance, AT (eds) Surfactant systems: their chemistry, pharmacy and biology. Chapman and Hall, London, pp 389–418
2. Hiltrop K (1999) In: Stegemeyer H (ed) Lyotrope Flüssigkristalle. Steinkopf, Darmstadt, pp 25–55
3. Vyas SP, Jaitely V, Kanaujia P (1997) Pharmazie 52:259
4. Wahlgren S, Lindstrom AL, Friberg SE (1984) J Pharm Sci 73:1484
5. Özer AY, Hincal A, Bouwstra JA (1991) Eur J Pharm Biopharm 37/2:75