@article{JGG_2014_18_1_JGG_2014_18_1_a2,
     author = {J. Kosinka and M. L�vicka },
     title = {Pythagorean {Hodograph} {Curves:} {A} {Survey} of {Recent} {Advances}},
     journal = {Journal for geometry and graphics},
     pages = {23--43},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/JGG_2014_18_1_JGG_2014_18_1_a2/}
}