摘要Let r be a positive integer. Let f(x, y) be a continuous function defined for 0≤x≤1, -∞<y<∞, and having continuous partial derivatives with respect to x, of order up to r, and periodic
8Cai Yingchun (Department of Mathematics,Shandong Normal University,Jinan 250014,China).on the Distribution of Square-full Integers[J].Acta Mathematica Sinica,English Series,1997,13(2):269-280.