@article{PS_2020__24_1_703_0,
     author = {Alfonsi, Aur\'elien and Jourdain, Benjamin},
     title = {Squared quadratic {Wasserstein} distance: optimal couplings and {Lions} differentiability},
     journal = {ESAIM: Probability and Statistics},
     pages = {703--717},
     publisher = {EDP-Sciences},
     volume = {24},
     year = {2020},
     doi = {10.1051/ps/2020013},
     mrnumber = {4174419},
     zbl = {1454.90028},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ps/2020013/}
}