@article{10_4153_CMB_2009_028_9,
     author = {Ikeda, Toru},
     title = {Essential {Surfaces} in {Graph} {Link} {Exteriors}},
     journal = {Canadian mathematical bulletin},
     pages = {257--266},
     year = {2009},
     volume = {52},
     number = {2},
     doi = {10.4153/CMB-2009-028-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2009-028-9/}
}