no. 2
On the fractional parts of x/n and related sequences. III
Annales de l'Institut Fourier, Tome 27 (1977) no. 2, pp. 31-36. 
@article{AIF_1977__27_2_31_0,
     author = {Saffari, Bahman and Vaughan, R. C.},
     title = {On the fractional parts of $x/n$ and related sequences. III},
     journal = {Annales de l'Institut Fourier},
     pages = {31--36},
     publisher = {Institut Fourier},
     volume = {27},
     number = {2},
     year = {1977},
     doi = {10.5802/aif.3002},
     zbl = {0379.10023},
     language = {en},
     url = {archive.numdam.org/item/AIF_1977__27_2_31_0/}
}
Saffari, Bahman; Vaughan, R. C. On the fractional parts of $x/n$ and related sequences. III. Annales de l'Institut Fourier, Tome 27 (1977) no. 2, pp. 31-36. doi : 10.5802/aif.3002. http://archive.numdam.org/item/AIF_1977__27_2_31_0/

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