@article{10_4064_fm193_1_1,
     author = {Greg Friedman},
     title = {Some non-trivial {PL} knots whose
 complements are homotopy circles},
     journal = {Fundamenta Mathematicae},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {193},
     number = {1},
     year = {2007},
     doi = {10.4064/fm193-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm193-1-1/}
}