@article{JEMS_2018_20_7_a4,
     author = {John L. Lewis and Kaj Nystr\"om},
     title = {Quasi-linear {PDEs} and low-dimensional sets},
     journal = {Journal of the European Mathematical Society},
     pages = {1689--1746},
     publisher = {mathdoc},
     volume = {20},
     number = {7},
     year = {2018},
     doi = {10.4171/jems/797},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/797/}
}