@article{JGG_2003_7_2_JGG_2003_7_2_a2,
     author = {R. Encheva and G. Georgiev},
     title = {Shapes of {Space} {Curves}},
     journal = {Journal for geometry and graphics},
     pages = {145--156},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/JGG_2003_7_2_JGG_2003_7_2_a2/}
}