@article{JEMS_2014_16_6_a1,
     author = {Xu-Jia Wang},
     title = {Counterexample to the convexity of level sets of solutions to the mean curvature equation},
     journal = {Journal of the European Mathematical Society},
     pages = {1173--1182},
     publisher = {mathdoc},
     volume = {16},
     number = {6},
     year = {2014},
     doi = {10.4171/jems/457},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/457/}
}