Sacerdotalis Caelibatus - The Celibacy of the Priest, Encyclical of Pope Paul VI promulgated on June 24, 1967
Multimedia
Priestly CelibacyCatholic Answers Live interview with Fr Ray Ryland, a former Anglican priest who converted and was ordained a Catholic priest. (requires RealPlayer - save file to hard drive)
Priestly Celibacyby Karl Keating (from his book What Catholics Really Believe: Setting the Record Straight)
Uses of Clerical Scandalby Philip Jenkins. Though cases of the sexual abuse of minors by priests continue to appear, it no longer seems plausible to speak of a general collapse of clerical discipline and celibacy or of a systematic cover-up by Catholic bishops.