| − | * Maldacena, ''The Large N Limit of Superconformal Field Theories and Supergravity'', {{arXiv|archive=hep-th|id=9711200}}. | + | * [http://arxiv.org/abs/hep-th/9711200 Maldacena, ''The Large N Limit of Superconformal Field Theories and Supergravity''] |