@article{MM2_1983__42_154932,
     author = {Ioannis Athanasopoulos},
     title = {Coincidence set of minimal surfaces for the thin obstacle.},
     journal = {Manuscripta mathematica},
     pages = {199--210},
     publisher = {mathdoc},
     volume = {42},
     year = {1983},
     zbl = {0517.49028},
     url = {http://geodesic.mathdoc.fr/item/MM2_1983__42_154932/}
}