@misc{EP_2013_43_a0, title = {Foreword}, journal = {ESAIM. Proceedings}, pages = {I--II}, publisher = {mathdoc}, volume = {43}, year = {2013}, doi = {10.1051/proc/20134300f}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.1051/proc/20134300f/} }