@article{10_4153_CMB_1977_005_1,
     author = {Blundon, W. J.},
     title = {A {Three-Fold} {Non-Lattice} {Covering}},
     journal = {Canadian mathematical bulletin},
     pages = {29--31},
     year = {1977},
     volume = {20},
     number = {1},
     doi = {10.4153/CMB-1977-005-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-005-1/}
}