@article{10_4153_CMB_2011_027_1,
     author = {Moonens, Laurent},
     title = {Nonconstant {Continuous} {Functions} whose {Tangential} {Derivative} {Vanishes} along a {Smooth} {Curve}},
     journal = {Canadian mathematical bulletin},
     pages = {706--715},
     year = {2011},
     volume = {54},
     number = {4},
     doi = {10.4153/CMB-2011-027-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-027-1/}
}