The Procter and Gamble Company
Patent: US6172095 B2, 2001 ;
US 6172095 B1

The Procter and Gamble Company
Patent: US5916900 A1, 1999 ;
US 5916900 A

The Procter and Gamble Company
Patent: US5576437 A1, 1996 ;
US 5576437 A

Sharples, Derek; Spengler, Gabriella; Molnar, Joseph; Antal, Zsuzsanna; Molnar, Annamaria; Kiss, Janos T.; Szabo, Jozsef A.; Hilgeroth, Andreas; Gallo, Sandrine; Mahamoud, Abdallah; Barbe, Jacques
European Journal of Medicinal Chemistry, 2005 , vol. 40, # 2 p. 195 - 202

The Procter and Gamble Company
Patent: US5716966 A1, 1998 ;
US 5716966 A