1. Extended affine Lie algebras and their root systems;Allison;Mem. Amer. Math. Soc.,1997
2. A characterization of affine Kac–Moody Lie algebras;Allison;Comm. Math. Phys.,1997
3. Quantum tori and the structure of elliptic quasi-simple Lie algebras;Berman;J. Funct. Anal.,1996
4. A unified view of some vertex operator constructions;Berman;Israel J. Math.,2003
5. Principal realization for extended affine Lie algebra of type sl2 with coordinates in a simple quantum torus with two variables;Berman,1999