@article{MM2_1997__94_2_156340,
     author = {Scott Nollet},
     title = {Subextremal curves.},
     journal = {Manuscripta mathematica},
     pages = {303--318},
     year = {1997},
     volume = {94},
     number = {2},
     zbl = {0918.14014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__94_2_156340/}
}