Beguines & Beghards - Article in the Catholic Encyclopedia, which makes it clear that the Beguines were not regarded as heretics as such. - http://www.newadvent.org/cathen/02389c.htm
Sisters Between: Beguines - A feminist history of this medieval women's religious movement. - http://userwww.sfsu.edu/~epf/1995/beguine.html
Na Prous Bonnet - A confession of a Beguine heretic. From the Medieval Sourcebook. - http://www.fordham.edu/halsall/source/naprous.html
The Beguines - Describes the brief history and spirituality of this medieval women's movement. - http://www.users.csbsju.edu/~eknuth/xpxx/beguines.html