Physics Letters B
Volume 115, Issue 3, 2 September 1982, Pages 202-206
Quantization of Newton's constant in certain supergravity theories*1

Edward Witten and Jonathan Bagger
Joseph Henry Laboratories, Princeton University, Princeton, NJ 08544, USA

Physics Letters B
Volume 78, Issue 1, 11 September 1978, Pages 97-101

Supersymmetry algebras that include topological charges

E. Witten
D. Olive
Harvard University, Society of Fellows, Cambridge, MA, USA
The Blackett Laboratory, Imperial College of Science and Technology, London, England