中国科学院数学与系统科学研究院期刊网
On the Classification of Positive Definite Unimodular Lattices over the Rings of Real ratic Integers
Rui Qing WANG
Acta Mathematica Sinica, Chinese Series . 2002, (1): 203 -208 .  DOI: 10.12386/A2002sxxb0026