@article{FORUM_1990__2_3_141629,
     author = {David Jerison},
     title = {An {Elementary} {Approach} to {Local} {Solvability} for {Constant} {Coefficient} {Partial} {Differential} {Equations.}},
     journal = {Forum mathematicum},
     pages = {45--50},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1990},
     zbl = {0712.35028},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1990__2_3_141629/}
}