Bray, H., & Schoen, R. M. (1999). Recent Proofs of the Riemannian Penrose Conjecture. In Current Developments in Mathematics (pp. 1–36). Somerville, MA: International Press.

Bray, H., and R. M. Schoen. “Recent Proofs of the Riemannian Penrose Conjecture.” In Current Developments in Mathematics, 1–36. Somerville, MA: International Press, 1999.

Bray H, Schoen RM. Recent Proofs of the Riemannian Penrose Conjecture. In: Current Developments in Mathematics. Somerville, MA: International Press; 1999. p. 1–36.

Bray, H., and R. M. Schoen. “Recent Proofs of the Riemannian Penrose Conjecture.” Current Developments in Mathematics, International Press, 1999, pp. 1–36.

Bray H, Schoen RM. Recent Proofs of the Riemannian Penrose Conjecture. Current Developments in Mathematics. Somerville, MA: International Press; 1999. p. 1–36.