@article{10_4153_CMB_1969_032_x,
     author = {Reid, K.B.},
     title = {On {Sets} of {Arcs} {Containing} {No} {Cycles} in a {Tournament*}},
     journal = {Canadian mathematical bulletin},
     pages = {261--264},
     year = {1969},
     volume = {12},
     number = {3},
     doi = {10.4153/CMB-1969-032-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-032-x/}
}