@article{SPS_1999__33__355_0,
     author = {Es-Sahib, Aziz and Heinich, Henri},
     title = {Barycentre canonique pour un espace m\'etrique \`a courbure n\'egative},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {355--370},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {33},
     year = {1999},
     mrnumber = {1768010},
     zbl = {0952.60010},
     language = {fr},
     url = {http://www.numdam.org/item/SPS_1999__33__355_0/}
}