@article{EP_1996_1_a6,
     author = {Ricardo Cortez},
     title = {Impulse variables, vortex dipoles and applications},
     journal = {ESAIM. Proceedings},
     pages = {95--107},
     publisher = {mathdoc},
     volume = {1},
     year = {1996},
     doi = {10.1051/proc:1996007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:1996007/}
}