@article{EP_1999_7_a30,
     author = {P. Ploumhans and G. S. Winckelmans and J. K. Salmon},
     title = {Vortex particles and tree codes: {I.} flows with arbitrary crossing between solid boundaries and particle redistribution lattice; {II.} vortex ring encountering a plane at an angle.},
     journal = {ESAIM. Proceedings},
     pages = {335--348},
     publisher = {mathdoc},
     volume = {7},
     year = {1999},
     doi = {10.1051/proc:1999031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:1999031/}
}