@article{JEMS_2008_10_4_a0,
     author = {Jean Van Schaftingen},
     title = {Estimates for $L^1$-vector fields under higher-order differential conditions},
     journal = {Journal of the European Mathematical Society},
     pages = {867--882},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {2008},
     doi = {10.4171/jems/133},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/133/}
}