See especially John Knox, Chapters in a Life of Paul, revised by the author and edited with introduction by D. R. A. Hare (Macon, GA: Mercer Univ. Press, 1987), and Paul Vielhauer, “On the ‘Paulinism’ of Acts,” in Studies in Luke-Acts: Essays Presented in Honor of Paul Schubert, ed. Leander E. Keck and J. Louis Martyn (Nashville: Abingdon, 1966), pp. 33–50.