@article{VM_2009_11_2_a1,
     author = {Lindsay D. Taylor},
     title = {Decorative {Knotting} {Using} {Trigonometric} {Parametrizations.}},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/VM_2009_11_2_a1/}
}