@article{EP_2009_26_a0,
     author = {Habib Ammari},
     title = {Preface},
     journal = {ESAIM. Proceedings},
     pages = {I--I},
     publisher = {mathdoc},
     volume = {26},
     year = {2009},
     doi = {10.1051/proc/2009001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc/2009001/}
}