Farey fractions with prime denominator and the large sieve
Colloque de théorie des nombres (Bordeaux, 1969), Mémoires de la Société Mathématique de France no. 25  (1971), p. 183-188
@incollection{MSMF_1971__25__183_0,
     author = {Wolke, Dieter},
     title = {Farey fractions with prime denominator and the large sieve},
     booktitle = {Colloque de th\'eorie des nombres (Bordeaux, 1969)},
     author = {Collectif},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {25},
     year = {1971},
     pages = {183-188},
     zbl = {0221.10045},
     mrnumber = {51 \#12753},
     language = {fr},
     url = {http://www.numdam.org/item/MSMF_1971__25__183_0}
}
Wolke, Dieter. Farey fractions with prime denominator and the large sieve, in Colloque de théorie des nombres (Bordeaux, 1969), Mémoires de la Société Mathématique de France, no. 25 (1971), pp. 183-188. doi : 10.24033/msmf.52. http://www.numdam.org/item/MSMF_1971__25__183_0/