Wikipedia on Phimosis
An extensive discussion about phimosis in all its variations. Somewhat technical in style but interesting none-the-less. There are other interesting articles on Wikipedia: Paraphimosis, Medical analysis of circumcision.
Care of the Intact penis
An article discouraging the practice of circumcision and explaining various issues regarding the non-circumcised penis.
Clinical Guidelines for Phimosis
Dr Peter Ball and John Dalton explain the various treatments for phimosis, particularly the stretching methods.
Conservative Treatment of Phimosis: Alternatives to Radical Circumcision
Provides information on conservative treatments of foreskin problems.
eMedicine - Phimosis and Paraphimosis
Provides a general overview of the condition, its causes, treatment and links to medical journals and references.