Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1989_46_6_a16, author = {A. V. Krylov}, title = {Interior averaging of first-order partial differential systems}, journal = {Matemati\v{c}eskie zametki}, pages = {112--113}, publisher = {mathdoc}, volume = {46}, number = {6}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_6_a16/} }
A. V. Krylov. Interior averaging of first-order partial differential systems. Matematičeskie zametki, Tome 46 (1989) no. 6, pp. 112-113. http://geodesic.mathdoc.fr/item/MZM_1989_46_6_a16/