@article{NUMA_1966__8_131686,
     author = {Bui-TRONG-LiEU and P. HUARD},
     title = {La m\'ethode des centres dans un espace topologique.},
     journal = {Numerische Mathematik},
     pages = {56--67},
     publisher = {mathdoc},
     volume = {8},
     year = {1966},
     zbl = {0171.40802},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1966__8_131686/}
}