@article{10_1090_S0894_0347_1994_1220787_3,
     author = {Evans, L. C. and M\~A{\textonequarter}ller, S.},
     title = {Hardy spaces and the two-dimensional {Euler} equations with nonnegative vorticity},
     journal = {Journal of the American Mathematical Society},
     pages = {199--219},
     publisher = {mathdoc},
     volume = {07},
     number = {1},
     year = {1994},
     doi = {10.1090/S0894-0347-1994-1220787-3},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1994-1220787-3/}
}