中国科学院数学与系统科学研究院期刊网
On the Average Number of Unitary Factors of Finite Abelian Groups (Ⅱ)
Wen Guang ZHAI
Acta Mathematica Sinica, Chinese Series . 2001, (4): 667 -672 .  DOI: 10.12386/A2001sxxb0087