Topological properties of the real numbers object in a topos Lawrence Neff Stout (1976) Cahiers de Topologie et Géométrie Différentielle Catégoriques
Topological Space Objects in a Topos II: ...-Completeness and ...-Cocompleteness. Lawrence Neff Stout (1975) Manuscripta mathematica
Torsion in K2 of fields and 0-cycles on rational surfaces. Pavaman M. Murthy, Roy Amit (1984) Commentarii mathematici Helvetici
Toward the description in a smooth topos of the dynamically possible motions and deformations of a continuous body F. William Lawvere (1980) Cahiers de Topologie et Géométrie Différentielle Catégoriques
Transformations of sheaf connections. Vassiliou, Efstathios (1996) Balkan Journal of Geometry and its Applications (BJGA)