@article{IM_1989__98_1_143741,
     author = {R.J. DiPerna and P.L. Lions},
     title = {Ordinary differential equations, transport theory and {Sobolev} spaces.},
     journal = {Inventiones mathematicae},
     pages = {511--548},
     publisher = {mathdoc},
     volume = {98},
     number = {1},
     year = {1989},
     zbl = {0696.34049},
     url = {http://geodesic.mathdoc.fr/item/IM_1989__98_1_143741/}
}