SolitaryConfinement.org - sobre solitárias (é, as prisões). Contém um pdf,
a comprehensive single point of reference on solitary confinement, examining its documented health effects, and professional, ethical and human rights guidelines and codes of practice relating to its use
e o Istanbul Statement:
to address the increasing use of solitary confinement and its harmful effects, a working group of 24 international experts adopted on December 9th 2007 the Istanbul Expert Statement on the Use and Effects of Solitary Confinement, calling on States to limit the use of solitary confinement to very exceptional cases, for as short a time as possible, and only as a last resort.