J. Butterfield

Some Possible Roles for Topos Theory in Quantum Theory and Quantum Gravity

C. Isham, J. Butterfield, C. J. Isham, 1999, gr-qc/9910005.

Topos Perspective on the Kochen–Specker Theorem: IV. Interval Valuations

C. J. Isham, J. Butterfield, 2001 .

Topos Perspective on the Kochen=nSpeckerTheorem: III. Von Neumann Algebras as theBase Category

C. J. Isham, J. Butterfield, J. Hamilton, 1999 .

Handbook of the philosophy of physics

J. Earman, J. Butterfield, J. Butterfield, 2006 .

On the Emergence of Time in Quantum Gravity

J. Butterfield, C.J.Isham, 1999 .

A Topos Perspective on the Kochen-Specker Theorem II. Conceptual Aspects and Classical Analogues

C. J. Isham, J. Butterfield, 1998 .

Topos Perspective on the Kochen-Specker Theorem: I. Quantum States as Generalized Valuations

C. J. Isham, J. Butterfield, J. Butterfield, 1998, quant-ph/9803055.