@article{10_4153_CJM_1993_016_5,
     author = {Liem, Vo Thanh and Venema, Gerard A.},
     title = {On the {Asphericity} of {Knot} {Complements}},
     journal = {Canadian journal of mathematics},
     pages = {340--356},
     year = {1993},
     volume = {45},
     number = {2},
     doi = {10.4153/CJM-1993-016-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-016-5/}
}