@article{JGG_2005_9_1_JGG_2005_9_1_a5,
     author = {B. Odehnal },
     title = {Common {Normals} of {Two} {Tori}},
     journal = {Journal for geometry and graphics},
     pages = {51--65},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JGG_2005_9_1_JGG_2005_9_1_a5/}
}