TY  - RPRT
TI  - N=4 string is the same as the N=2 string.
AU  - W Siegel
PY  - 1992
DO  - 10.1103/physrevlett.69.1493
UR  - https://pubmed.ncbi.nlm.nih.gov/10046236/
ID  - 10046236
ER  -