@article{10_4153_CJM_1980_093_3,
     author = {Ramanathan, K. G. and Subbarao, M. V.},
     title = {Some {Generalizations} of {Ramanujan's} {Sum}},
     journal = {Canadian journal of mathematics},
     pages = {1250--1260},
     year = {1980},
     volume = {32},
     number = {5},
     doi = {10.4153/CJM-1980-093-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-093-3/}
}