@article{10_4153_CMB_1984_084_8,
     author = {Hardy, G. E. and Subbarao, M. V.},
     title = {Semi-r {Free} and {r-Free} {Integers-a} {Unified} {Approach:} {Corrigendum} and {Addendum}},
     journal = {Canadian mathematical bulletin},
     pages = {523--523},
     year = {1984},
     volume = {27},
     number = {4},
     doi = {10.4153/CMB-1984-084-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1984-084-8/}
}