English to Spanish Law/Patents Law (general)

¿Cómo traduciriáis "identifies a source in our case law" en el siguiente contexto?
A necessary condition for federal habeas relief here is that the state court’s decision be “contrary to, or involve an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States.” 28 U. S. C. §2254(d)(1). Neither the opinion below, nor any of the appellate cases it relies on, identifies a source in our case law for the law library access right other than Faretta. See 113 Fed. Appx., at 804 (relying on Bribiesca v. Galaza, 215 F. 3d 1015, 1020 (CA9 2000) (quoting Milton v. Morris, 767 F. 2d 1443, 1446 (CA9 1985)); ibid. (“Faretta controls this case”).