共 2 条
[1]
Kesava Menon P., On the sum Σ(a - 1,n)[(a,n) = 1], J. Indian Math. Soc., (N.S.), 29, pp. 155-163, (1965)
[2]
Neumann P., A lemma that is not Burnside's, Math. Sci., 4, pp. 133-141, (1979)