TY  - RPRT
TI  - Generalized spin systems and sigma models.
AU  - S Randjbar-Daemi
AU  - A Salam
AU  - J Strathdee
PY  - 1993
DO  - 10.1103/physrevb.48.3190
UR  - https://pubmed.ncbi.nlm.nih.gov/10008743/
ID  - 10008743
ER  -