@article{10_4007_annals_2003_157_807,
     author = {Eric Carlen and Wilfrid Gangbo},
     title = {Constrained deepest descent in the $2${-Wasserstein} metric},
     journal = {Annals of mathematics},
     pages = {807--846},
     publisher = {mathdoc},
     volume = {157},
     number = {3},
     year = {2003},
     doi = {10.4007/annals.2003.157.807},
     mrnumber = {983782},
     zbl = {038.49040},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2003.157.807/}
}