@article{10_4064_aa_82_1_45_55,
     author = {Wenguang Zhai and Xiaodong Cao},
     title = {On the average number of direct factors of finite abelian groups},
     journal = {Acta Arithmetica},
     pages = {45--55},
     publisher = {mathdoc},
     volume = {82},
     number = {1},
     year = {1997},
     doi = {10.4064/aa-82-1-45-55},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-82-1-45-55/}
}