@article{10_4064_fm168_2_1,
     author = {Seiichi Kamada},
     title = {Wirtinger presentations for higher dimensional
manifold knots obtained from diagrams},
     journal = {Fundamenta Mathematicae},
     pages = {105--112},
     publisher = {mathdoc},
     volume = {168},
     number = {2},
     year = {2001},
     doi = {10.4064/fm168-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm168-2-1/}
}