@article{MM2_1997__94_2_156332,
     author = {Peter M. Schuster},
     title = {Identifying variable points on a smooth curve.},
     journal = {Manuscripta mathematica},
     pages = {195--210},
     year = {1997},
     volume = {94},
     number = {2},
     zbl = {0912.32014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__94_2_156332/}
}