@article{IM_1972__17_142176,
     author = {M.A. Guti\'errez},
     title = {On {Knot} {Modules.}},
     journal = {Inventiones mathematicae},
     pages = {329--335},
     publisher = {mathdoc},
     volume = {17},
     year = {1972},
     zbl = {0243.57007},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__17_142176/}
}