Co-founder of string theory. Interview by D. Zierler, AIP Oral History Interviews, July 2020 On the NSR superstring: On the Scherk-Schwarz mechanism: Joël Scherk, John Schwarz, Spontaneous breaking of supersymmetry through dimensional reduction, Physics Letters B Volume 82, Issue 1, 12 March 1979, Pages 60-64 (doi:10.1016/0370-2693(79)90425-8) Joël Scherk, John Schwarz: How to get masses from extra dimensions, Nuclear Physics B 153 (1979) 61–88 [doi:10.1016/0550-3213(79)90592-3] reprinted in:...