Elliptic Problem Solvers Conference, Birkhoff, G., & Schoenstadt, A. (1984). Elliptic problem solvers II. Orlando, Fla.: Academic Press.

Elliptic Problem Solvers Conference, Garrett Birkhoff, and Arthur Schoenstadt. Elliptic Problem Solvers II. Orlando, Fla.: Academic Press, 1984.

Elliptic Problem Solvers Conference, et al. Elliptic Problem Solvers II. Orlando, Fla.: Academic Press, 1984.