Eden, R., Landshoff, P., & Polkinghorne, J. (1966). The analytic s-metrix. At the University press.

Eden, R.J, P.V Landshoff, and J.C Polkinghorne. The Analytic S-metrix. Cambridge: At the University press, 1966.

Eden, R.J, et al. The Analytic S-metrix. At the University press, 1966.