@article{RSMUP_2019__142__103_0,
     author = {Mandallena, Jean-Philippe},
     title = {A necessary and sufficient condition for $C^1$-regularity of solutions of one-dimensional variational obstacle problems},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {103--134},
     publisher = {European Mathematical Society Publishing House},
     address = {Zuerich, Switzerland},
     volume = {142},
     year = {2019},
     doi = {10.4171/RSMUP/33},
     mrnumber = {4032807},
     zbl = {1439.49002},
     url = {http://archive.numdam.org/articles/10.4171/RSMUP/33/}
}