Couch, W.E. and Torrence, R. J.. "Wave splitting and lattice dynamics". Journal of Physics. A. Mathematical and General 28.16 (1995): 4609-4621. Print.
Couch, W.E., Torrence, R.J., Janis, A.I. and Newman, E.T.. "Tail of a Gravitational Wave". Journal of Mathematical Physics 9.3 (1968): 484-496. Print.
Newman, E.T., Couch, W.E., Chinnapared, A., Exton, A., Prakash, A. and Torrence, R.. "Metric of a Rotating, Charged Mass". Journal of Mathematical Physics 6.6 (1965): 918-919. Print.