中国科学院数学与系统科学研究院期刊网
Automorphism Groups of Vertex Operator Algebras Associated with the Affine Nappi-Witten Algebra Ĥ4
Song WANG
Acta Mathematica Sinica, Chinese Series . 2014, (2): 331 -338 .  DOI: 10.12386/A2014sxxb0033