@article{10_4064_aa_86_2_113_132,
     author = {Shuguang Li},
     title = {On the number of elements with maximal order in the multiplicative group modulo n},
     journal = {Acta Arithmetica},
     pages = {113--132},
     publisher = {mathdoc},
     volume = {86},
     number = {2},
     year = {1998},
     doi = {10.4064/aa-86-2-113-132},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-86-2-113-132/}
}