Catholic Encyclopedia: Virgin Birth of Christ
Dogma which teaches that the Blessed Mother of Jesus Christ was a virgin before, during, and after the conception and birth of her Divine Son.
www.newadvent.org/cathen/15448a.htm
Virgin Birth of Jesus: Fact or Fable?
Offering various church stances on the issue, along with direct biblical references.
www.religioustolerance.org/virgin_b.htm
Virgin-Birth Prophecy?
Essay from the Secular Web, written by Kenneth E. Nahigian, on possible text translation liberties with the term "virgin."
www.infidels.org/library/magazines/tsr/1993/2/2virgi93.html