1. E. M. Andreev, On convex polyhedra in Lobačevskiĭ spaces, Mat. Sb. (N.S.) 81 (123) (1970), 445–478; English transl. Math.USSR-Sb. 10 (1970), 413–440.
2. E. M. Andreev, On convex polyhedra of finite volume in Lobačevskiĭ space, Mat. Sb. (N.S.) 83 (125) (1970), 256–260; English transl. Math. USSR-Sb. 12 (1970), 255–259.
3. A. F. Beardon and K. Stephenson, The uniformization theorem for circle packings, Indiana Univ. Math. J. 39 (1990), 1383–1425.
4. A. F. Beardon and K. Stephenson, The Schwarz–Pick lemma for circle packings, Illinois J. Math. 141 (1991), 577–606.
5. A. F. Beardon and K. Stephenson, Circle packings in different geometries, Tôhoku Math. J. 43 (1991), 27–36.