Beisert, N. Duality & Integrable Structures, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
1203.0525v1.pdf (Preprint), 507KB
PRD86_026006.pdf (beliebiger Volltext), 426KB
Beisert, N., & Vergu, C. (2012). On the Geometry of Null Polygons in Full N=4 Superspace. Physical Review D, 86: 026006. doi:10.1103/PhysRevD.86.026006.