@article{AIHPC_1991__8_3-4_271_0,
     author = {Diperna, R. J. and Lions, P. L. and Meyer, Y.},
     title = {$L^p$ regularity of velocity averages},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {271--287},
     publisher = {Gauthier-Villars},
     volume = {8},
     number = {3-4},
     year = {1991},
     mrnumber = {1127927},
     zbl = {0763.35014},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1991__8_3-4_271_0/}
}