1. Beggs, Edwin J., José Félix Costa, Bruno Loff, and John V. Tucker. 2007. Computational complexity with experiments as oracles. Proceedings Royal Society Series A 464: 2777–2801.
2. Beggs, Edwin J., José Félix Costa, Bruno Loff, and John V. Tucker. 2008a. The complexity of measurement in classical physics. In Theory and applications of models of computation. Lecture Notes in Computer Science, vol. 4978, eds. M. Agrawal, D. Du, Z. Duan, and A. Li, 20–30. Berlin/Heidelberg: Springer.
3. Beggs, Edwin J., José Félix Costa, and John V. Tucker. 2008b. Oracles and advice as measurements. In Unconventional computing 2008. Lecture Notes in Computer Science, vol. 5204, eds. C.S. Calude et al. 33–50. Berlin/Heidelberg: Springer.
4. Beggs, Edwin J., and John V. Tucker. Computations via experiments with kinematic systems. Research Report 4.04, Department of Mathematics, University of Wales Swansea, March 2004 or Technical Report 5-2004, Department of Computer Science, University of Wales Swansea, March 2004.
5. Beggs, Edwin J., and John V. Tucker. 2006. Embedding infinitely parallel computation in Newtonian kinematics. Applied Mathematics and Computation 178: 25–43.