中国科学院数学与系统科学研究院期刊网
Integrals and Central Extensions of a Lie Algebra with a Triangular Decomposition
Zhi Hong JIANG, Yan Min PU
Acta Mathematica Sinica, Chinese Series . 2005, (4): 747 -762 .  DOI: 10.12386/A2005sxxb0091