@article{CMH_1971__46_139470,
     author = {Kunio Murasugi},
     title = {On {Periodic} {Knots}},
     journal = {Commentarii mathematici Helvetici},
     pages = {162--177},
     publisher = {mathdoc},
     volume = {46},
     year = {1971},
     zbl = {0206.25603},
     url = {http://geodesic.mathdoc.fr/item/CMH_1971__46_139470/}
}