@article{JEMS_2010_12_4_a5,
     author = {Young-Heon Kim and Robert J. McCann},
     title = {Continuity, curvature, and the general covariance of optimal transportation},
     journal = {Journal of the European Mathematical Society},
     pages = {1009--1040},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2010},
     doi = {10.4171/jems/221},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/221/}
}